[gobject] Hook up hb_map_t
diff --git a/src/hb-map.cc b/src/hb-map.cc
index e3ddae4..138a856 100644
--- a/src/hb-map.cc
+++ b/src/hb-map.cc
@@ -157,8 +157,6 @@
  *
  *
  *
- * Return value:
- *
  * Since: 1.7.7
  **/
 void
@@ -188,7 +186,7 @@
 /**
  * hb_map_del:
  * @map: a map.
- * @codepoint:
+ * @key:
  *
  *
  *
@@ -204,7 +202,7 @@
 /**
  * hb_map_has:
  * @map: a map.
- * @codepoint:
+ * @key:
  *
  *
  *