Print directory name in check_dir

Author: alexreinking

.github/workflows/presubmit.yml

@@ -47,6 +47,7 @@ jobs:
         run: |
           check_dir() {
             local dir="$1"
+            echo "Checking $dir"
             (
               cd "$dir" &&
               comm -23 \
@@ -77,4 +78,4 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: actionlint
-        uses: raven-actions/actionlint@v2
+        uses: raven-actions/actionlint@v2