Fix bash command substitution bug in OpenAPI sync workflow (#58271)

Author: heiskr

.github/workflows/sync-openapi.yml

@@ -85,7 +85,7 @@ jobs:
           # If nothing to commit, exit now. It's fine. No orphans.
           changes=$(git diff --name-only | wc -l)
           if [[ $changes -eq 0 ]]; then
-            echo "There are no changes to commit after running `npm run sync-rest` Exiting..."
+            echo "There are no changes to commit after running 'npm run sync-rest'. Exiting..."
             exit 0
           fi