disable linkchecks on push

Hopefully stabilizes the results for less 403 answers

.github/workflows/documentation.yml

@@ -1,9 +1,9 @@
 name: documentation
 
 on:
-  push:            # run on push events in the docs subfolder
-    paths:
-      - 'docs/**'
+  # push:            # run on push events in the docs subfolder
+  #  paths:
+  #    - 'docs/**'
   workflow_dispatch:
   schedule:
   - cron: '30 1 * * *' # daily at 01:30 UTC