[Comgr][NFC] fix indentation

Author: lamb-j

amd/comgr/docs/ReleaseNotes.md

@@ -25,7 +25,7 @@ behaviors:
   - caching clang driver invocations
   More information about the Comgr Caching infrastructure and how to use it can
   be found in amd/comgr/README.md.
-  - Updated the license used for Comgr from Illinois to Apache 2.0 with LLVM
+- Updated the license used for Comgr from Illinois to Apache 2.0 with LLVM
 Extensions (the same license used by LLVM).