Rename OWNERS-codecs to match naming policies

Bug: 181751857
Test: upload/gerrit
Change-Id: I98e0fea666893e16db2df79e8bcc5805dd35e154
diff --git a/OWNERS b/OWNERS
index 32e7987..660036d 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,3 +1,3 @@
 # owners for external/tremolo
-include platform/frameworks/av:/media/janitors/OWNERS-codecs
+include platform/frameworks/av:/media/janitors/codec_OWNERS
 essick@google.com