don't deploy on forks

Author: mvadari

.github/workflows/deploy.yml

@@ -16,6 +16,7 @@ concurrency:
 
 jobs:
   build:
+    if: github.repository == 'XRPLF/XRPL-Standards'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -52,6 +53,7 @@ jobs:
           path: "site/_site"
 
   deploy:
+    if: github.repository == 'XRPLF/XRPL-Standards'
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}