right filename in doxygen comment

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@10185 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/libfaac.c

@@ -20,7 +20,7 @@
  */
 
 /**
- * @file faacaudio.c
+ * @file libfaac.c
  * Interface to libfaac for aac encoding.
  */