Stop deploy workflow runnnig on forks

Author: jbampton

.github/workflows/deploy.yml

@@ -7,6 +7,7 @@ on:
 
 jobs:
   deployment:
+    if: github.repository == 'NextCommunity/NextCommunity.github.io'
     permissions:
       pages: write # to deploy to Pages
       id-token: write # to verify the deployment originates from an appropriate source