Try update to check on deployment?

Author: Susan Vanderplas

.github/workflows/check-links.yml

@@ -1,8 +1,7 @@
 on:
   schedule:
     - cron: 0 0 1 * * # run monthly
-  repository_dispatch: # run manually
-    types: [check-link]
+  deployment:
   # push:
   # ...