fix(ci): simplify blocking-label error message

Signed-off-by: Etai Lev Ran <elevran@gmail.com>

Author: elevran

.github/workflows/pr-hold-gate.yml

@@ -27,12 +27,7 @@ jobs:
           labels=$(gh pr view "$PR_URL" --json labels -q '.labels[].name')
           for label in "${blocking_labels[@]}"; do
             if grep -qxF "$label" <<< "$labels"; then
-              if [ "$label" = hold ]; then
-                howto="run /hold cancel"
-              else
-                howto="remove it from the PR"
-              fi
-              echo "::error::Blocking label '$label' is present. To allow merge, $howto."
+              echo "::error::Blocking label '$label' is present. Remove it to allow merge (e.g., /hold cancel for hold)."
               exit 1
             fi
           done