Update sync-main-to-dev.yaml

Author: ralfhandl

.github/workflows/sync-main-to-dev.yaml

@@ -33,7 +33,7 @@ jobs:
 
           gh pr create --base $BASE --head $HEAD \
             --label "Housekeeping" \
-            --reviewer "OAI/TSC" \
+            --reviewer "OAI/tsc" \
             --title "$BASE: update from $HEAD" \
             --body "Merge \`$HEAD\` into \`$BASE\`."
         env: