Add SHA to panding message

Author: cardil

.github/workflows/docs.yml

@@ -73,7 +73,7 @@ jobs:
           repository: ${{ github.repository }}
           number: ${{ github.event.number }}
           id: deploy-preview
-          message: "Starting deployment of preview ⏳..."
+          message: "Starting deployment of preview for ${{ github.event.pull_request.head.sha }} ⏳..."
 
       - name: Set base URL for preview
         run: echo "BASE_URL=https://${{ github.repository_owner }}.github.io/${{ github.event.repository.name }}/${{ env.PR_PATH }}/" >> "$GITHUB_ENV"