ci: run check-links after deploy completes

Change check-links to a reusable workflow called from deploy.yml
after the deploy job, preventing false 404s on new pages.

Author: nicknikolakakis

.github/workflows/check-links.yml

@@ -1,10 +1,7 @@
 name: Check Links
 
 on:
-  push:
-    branches: [main]
-    paths:
-      - '**.md'
+  workflow_call:
   pull_request:
     branches: [main]
     paths:

.github/workflows/deploy.yml

@@ -51,3 +51,9 @@ jobs:
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4
+
+  check-links:
+    needs: deploy
+    uses: ./.github/workflows/check-links.yml
+    permissions:
+      contents: read