Update src/hb-graphite2.cc

Co-Authored-By: Khaled Hosny <dr.khaled.hosny@gmail.com>

src/hb-graphite2.cc

diff --git a/src/hb-graphite2.cc b/src/hb-graphite2.cc
index 5db524a..a061d41 100644
--- a/src/hb-graphite2.cc
+++ b/src/hb-graphite2.cc
@@ -41,7 +41,7 @@
  * @short_description: Graphite2 integration
  * @include: hb-graphite2.h
  *
- * Functions for using HarfBuzz with fonts that include Graphite2 features.
+ * Functions for using HarfBuzz with fonts that include Graphite features.
  * 
  * For Graphite features to work, you must be sure that HarfBuzz was compiled
  * with the `graphite2` shaping engine enabled. Currently, the default is to