Fix grammar errors in documentation

Originally committed as revision 23904 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 2 insertions, 2 deletions

diff --git a/libavformat/avlanguage.h b/libavformat/avlanguage.h
index eac0031455..7fb8968810 100644
--- a/libavformat/avlanguage.h
+++ b/libavformat/avlanguage.h
@@ -31,8 +31,8 @@ enum AVLangCodespace {
 };
 
 /**
- * Converts a language code to a target codespace. The source codespace is guessed.
- * Returns NULL if the provided lang is null or invalid.
+ * Convert a language code to a target codespace. The source codespace is guessed.
+ * @return NULL if the provided lang is null or invalid.
  */
 const char *av_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace);