Update validate.yml

.github/workflows/validate.yml

@@ -9,12 +9,25 @@ on:
       - Publish
     types:
       - completed
+      - waiting
     branches: 
       - main
 
 jobs:
-   check-links:
-     environment: production 
+
+   check-staging:
+     environment: staging
+     runs-on: ubuntu-latest
+     if: ${{ github.event.workflow_run.conclusion == 'action_required' }}
+     steps:
+       - run: echo "Staging has completed successfully"
+       - name: Check Links
+         uses: filiph/linkcheck@2.0.23
+         with:
+           arguments: http://docs-staging.threatx.com
+
+   check-prod: 
+     environment: production
      runs-on: ubuntu-latest
      if: ${{ github.event.workflow_run.conclusion == 'success' }}
      steps: