ci: Release process improvements (no-changelog) (#5535)

* ci: Switch release workflows to trigger when releases are published (no-changelog)

* ci: Allow creating releases from tags and commits as well

.github/workflows/check-documentation-urls.yml

@@ -1,9 +1,8 @@
 name: Check Documentation URLs
 
 on:
-  push:
-    tags:
-      - n8n@*
+  release:
+    types: [published]
   schedule:
     - cron: '0 0 * * *'
   workflow_dispatch: