[docs] Fix warnings about unknown annotations

Use square brackets so that gtk-doc does not consider these to be
annotations.
diff --git a/src/hb-unicode.h b/src/hb-unicode.h
index 2353f0f..9d3cbf1 100644
--- a/src/hb-unicode.h
+++ b/src/hb-unicode.h
@@ -50,36 +50,36 @@
 
 /**
  * hb_unicode_general_category_t:
- * @HB_UNICODE_GENERAL_CATEGORY_CONTROL:              (Cc)
- * @HB_UNICODE_GENERAL_CATEGORY_FORMAT:		      (Cf)
- * @HB_UNICODE_GENERAL_CATEGORY_UNASSIGNED:	      (Cn)
- * @HB_UNICODE_GENERAL_CATEGORY_PRIVATE_USE:	      (Co)
- * @HB_UNICODE_GENERAL_CATEGORY_SURROGATE:	      (Cs)
- * @HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER:     (Ll)
- * @HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER:      (Lm)
- * @HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER:	      (Lo)
- * @HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER:     (Lt)
- * @HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER:     (Lu)
- * @HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK:	      (Mc)
- * @HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK:	      (Me)
- * @HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK:     (Mn)
- * @HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER:	      (Nd)
- * @HB_UNICODE_GENERAL_CATEGORY_LETTER_NUMBER:	      (Nl)
- * @HB_UNICODE_GENERAL_CATEGORY_OTHER_NUMBER:	      (No)
- * @HB_UNICODE_GENERAL_CATEGORY_CONNECT_PUNCTUATION:  (Pc)
- * @HB_UNICODE_GENERAL_CATEGORY_DASH_PUNCTUATION:     (Pd)
- * @HB_UNICODE_GENERAL_CATEGORY_CLOSE_PUNCTUATION:    (Pe)
- * @HB_UNICODE_GENERAL_CATEGORY_FINAL_PUNCTUATION:    (Pf)
- * @HB_UNICODE_GENERAL_CATEGORY_INITIAL_PUNCTUATION:  (Pi)
- * @HB_UNICODE_GENERAL_CATEGORY_OTHER_PUNCTUATION:    (Po)
- * @HB_UNICODE_GENERAL_CATEGORY_OPEN_PUNCTUATION:     (Ps)
- * @HB_UNICODE_GENERAL_CATEGORY_CURRENCY_SYMBOL:      (Sc)
- * @HB_UNICODE_GENERAL_CATEGORY_MODIFIER_SYMBOL:      (Sk)
- * @HB_UNICODE_GENERAL_CATEGORY_MATH_SYMBOL:	      (Sm)
- * @HB_UNICODE_GENERAL_CATEGORY_OTHER_SYMBOL:	      (So)
- * @HB_UNICODE_GENERAL_CATEGORY_LINE_SEPARATOR:	      (Zl)
- * @HB_UNICODE_GENERAL_CATEGORY_PARAGRAPH_SEPARATOR:  (Zp)
- * @HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR:      (Zs)
+ * @HB_UNICODE_GENERAL_CATEGORY_CONTROL:              [Cc]
+ * @HB_UNICODE_GENERAL_CATEGORY_FORMAT:		      [Cf]
+ * @HB_UNICODE_GENERAL_CATEGORY_UNASSIGNED:	      [Cn]
+ * @HB_UNICODE_GENERAL_CATEGORY_PRIVATE_USE:	      [Co]
+ * @HB_UNICODE_GENERAL_CATEGORY_SURROGATE:	      [Cs]
+ * @HB_UNICODE_GENERAL_CATEGORY_LOWERCASE_LETTER:     [Ll]
+ * @HB_UNICODE_GENERAL_CATEGORY_MODIFIER_LETTER:      [Lm]
+ * @HB_UNICODE_GENERAL_CATEGORY_OTHER_LETTER:	      [Lo]
+ * @HB_UNICODE_GENERAL_CATEGORY_TITLECASE_LETTER:     [Lt]
+ * @HB_UNICODE_GENERAL_CATEGORY_UPPERCASE_LETTER:     [Lu]
+ * @HB_UNICODE_GENERAL_CATEGORY_SPACING_MARK:	      [Mc]
+ * @HB_UNICODE_GENERAL_CATEGORY_ENCLOSING_MARK:	      [Me]
+ * @HB_UNICODE_GENERAL_CATEGORY_NON_SPACING_MARK:     [Mn]
+ * @HB_UNICODE_GENERAL_CATEGORY_DECIMAL_NUMBER:	      [Nd]
+ * @HB_UNICODE_GENERAL_CATEGORY_LETTER_NUMBER:	      [Nl]
+ * @HB_UNICODE_GENERAL_CATEGORY_OTHER_NUMBER:	      [No]
+ * @HB_UNICODE_GENERAL_CATEGORY_CONNECT_PUNCTUATION:  [Pc]
+ * @HB_UNICODE_GENERAL_CATEGORY_DASH_PUNCTUATION:     [Pd]
+ * @HB_UNICODE_GENERAL_CATEGORY_CLOSE_PUNCTUATION:    [Pe]
+ * @HB_UNICODE_GENERAL_CATEGORY_FINAL_PUNCTUATION:    [Pf]
+ * @HB_UNICODE_GENERAL_CATEGORY_INITIAL_PUNCTUATION:  [Pi]
+ * @HB_UNICODE_GENERAL_CATEGORY_OTHER_PUNCTUATION:    [Po]
+ * @HB_UNICODE_GENERAL_CATEGORY_OPEN_PUNCTUATION:     [Ps]
+ * @HB_UNICODE_GENERAL_CATEGORY_CURRENCY_SYMBOL:      [Sc]
+ * @HB_UNICODE_GENERAL_CATEGORY_MODIFIER_SYMBOL:      [Sk]
+ * @HB_UNICODE_GENERAL_CATEGORY_MATH_SYMBOL:	      [Sm]
+ * @HB_UNICODE_GENERAL_CATEGORY_OTHER_SYMBOL:	      [So]
+ * @HB_UNICODE_GENERAL_CATEGORY_LINE_SEPARATOR:	      [Zl]
+ * @HB_UNICODE_GENERAL_CATEGORY_PARAGRAPH_SEPARATOR:  [Zp]
+ * @HB_UNICODE_GENERAL_CATEGORY_SPACE_SEPARATOR:      [Zs]
  *
  * Data type for the "General_Category" (gc) property from
  * the Unicode Character Database.
@@ -122,60 +122,60 @@
 
 /**
  * hb_unicode_combining_class_t:
- * @HB_UNICODE_COMBINING_CLASS_NOT_REORDERED
- * @HB_UNICODE_COMBINING_CLASS_OVERLAY
- * @HB_UNICODE_COMBINING_CLASS_NUKTA
- * @HB_UNICODE_COMBINING_CLASS_KANA_VOICING
- * @HB_UNICODE_COMBINING_CLASS_VIRAMA
- * @HB_UNICODE_COMBINING_CLASS_CCC11: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC12: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC13: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC14: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC15: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC16: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC17: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC18: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC19: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC20: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC21: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC22: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC23: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC24: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC25: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC26: (Hebrew)
- * @HB_UNICODE_COMBINING_CLASS_CCC28: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC29: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC30: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC31: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC32: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC33: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC34: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC35: (Arabic)
- * @HB_UNICODE_COMBINING_CLASS_CCC36: (Syriac)
- * @HB_UNICODE_COMBINING_CLASS_CCC84: (Telugu)
- * @HB_UNICODE_COMBINING_CLASS_CCC91: (Telugu)
- * @HB_UNICODE_COMBINING_CLASS_CCC103: (Thai)
- * @HB_UNICODE_COMBINING_CLASS_CCC107: (Thai)
- * @HB_UNICODE_COMBINING_CLASS_CCC118: (Lao)
- * @HB_UNICODE_COMBINING_CLASS_CCC122: (Lao)
- * @HB_UNICODE_COMBINING_CLASS_CCC129: (Tibetan)
- * @HB_UNICODE_COMBINING_CLASS_CCC130: (Tibetan)
- * @HB_UNICODE_COMBINING_CLASS_CCC133: (Tibetan)
- * @HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT
- * @HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW
- * @HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE
- * @HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT
- * @HB_UNICODE_COMBINING_CLASS_BELOW_LEFT
- * @HB_UNICODE_COMBINING_CLASS_BELOW
- * @HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT
- * @HB_UNICODE_COMBINING_CLASS_LEFT
- * @HB_UNICODE_COMBINING_CLASS_RIGHT
- * @HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT
- * @HB_UNICODE_COMBINING_CLASS_ABOVE
- * @HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT
- * @HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW
- * @HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE
- * @HB_UNICODE_COMBINING_CLASS_IOTA_SUBSCRIPT
+ * @HB_UNICODE_COMBINING_CLASS_NOT_REORDERED:
+ * @HB_UNICODE_COMBINING_CLASS_OVERLAY:
+ * @HB_UNICODE_COMBINING_CLASS_NUKTA:
+ * @HB_UNICODE_COMBINING_CLASS_KANA_VOICING:
+ * @HB_UNICODE_COMBINING_CLASS_VIRAMA:
+ * @HB_UNICODE_COMBINING_CLASS_CCC11: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC12: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC13: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC14: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC15: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC16: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC17: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC18: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC19: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC20: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC21: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC22: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC23: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC24: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC25: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC26: [Hebrew]
+ * @HB_UNICODE_COMBINING_CLASS_CCC28: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC29: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC30: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC31: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC32: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC33: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC34: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC35: [Arabic]
+ * @HB_UNICODE_COMBINING_CLASS_CCC36: [Syriac]
+ * @HB_UNICODE_COMBINING_CLASS_CCC84: [Telugu]
+ * @HB_UNICODE_COMBINING_CLASS_CCC91: [Telugu]
+ * @HB_UNICODE_COMBINING_CLASS_CCC103: [Thai]
+ * @HB_UNICODE_COMBINING_CLASS_CCC107: [Thai]
+ * @HB_UNICODE_COMBINING_CLASS_CCC118: [Lao]
+ * @HB_UNICODE_COMBINING_CLASS_CCC122: [Lao]
+ * @HB_UNICODE_COMBINING_CLASS_CCC129: [Tibetan]
+ * @HB_UNICODE_COMBINING_CLASS_CCC130: [Tibetan]
+ * @HB_UNICODE_COMBINING_CLASS_CCC133: [Tibetan]
+ * @HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW_LEFT:
+ * @HB_UNICODE_COMBINING_CLASS_ATTACHED_BELOW:
+ * @HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE:
+ * @HB_UNICODE_COMBINING_CLASS_ATTACHED_ABOVE_RIGHT:
+ * @HB_UNICODE_COMBINING_CLASS_BELOW_LEFT:
+ * @HB_UNICODE_COMBINING_CLASS_BELOW:
+ * @HB_UNICODE_COMBINING_CLASS_BELOW_RIGHT:
+ * @HB_UNICODE_COMBINING_CLASS_LEFT:
+ * @HB_UNICODE_COMBINING_CLASS_RIGHT:
+ * @HB_UNICODE_COMBINING_CLASS_ABOVE_LEFT:
+ * @HB_UNICODE_COMBINING_CLASS_ABOVE:
+ * @HB_UNICODE_COMBINING_CLASS_ABOVE_RIGHT:
+ * @HB_UNICODE_COMBINING_CLASS_DOUBLE_BELOW:
+ * @HB_UNICODE_COMBINING_CLASS_DOUBLE_ABOVE:
+ * @HB_UNICODE_COMBINING_CLASS_IOTA_SUBSCRIPT:
  * @HB_UNICODE_COMBINING_CLASS_INVALID: 255
  *
  * Data type for the Canonical_Combining_Class (ccc) property