Misc (#915): 
 - updated missing doxygen documentation from various PJMEDIA-CODEC headers


git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2875 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjmedia/include/pjmedia-codec/passthrough.h b/pjmedia/include/pjmedia-codec/passthrough.h
index c4f94a9..7a47af1 100644
--- a/pjmedia/include/pjmedia-codec/passthrough.h
+++ b/pjmedia/include/pjmedia-codec/passthrough.h
@@ -29,7 +29,7 @@
 
 /**
  * @defgroup PJMED_PASSTHROUGH_CODEC Passthrough Codecs
- * @ingroup PJMEDIA_CODEC
+ * @ingroup PJMEDIA_CODEC_CODECS
  * @brief Implementation of passthrough codecs
  * @{
  *