Removed content write permission from broken-links-site workflow

Author: george-gca

.github/workflows/broken-links-site.yml

@@ -5,9 +5,6 @@ on:
     workflows: [Deploy site]
     types: [completed]
 
-permissions:
-  contents: write
-
 jobs:
   check-links-on-site:
     # https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#running-a-workflow-based-on-the-conclusion-of-another-workflow