Fix a typo in include/freetype/ftsystem.h.
diff --git a/include/freetype/ftsystem.h b/include/freetype/ftsystem.h
index a95b2c7..d8aa44f 100644
--- a/include/freetype/ftsystem.h
+++ b/include/freetype/ftsystem.h
@@ -301,7 +301,7 @@ FT_BEGIN_HEADER
* The stream's input function.
*
* close ::
- * The stream;s close function.
+ * The stream's close function.
*
* memory ::
* The memory manager to use to preload frames. This is set