Update action.yml to remove unnecessary triggers

Removed push and schedule triggers from the workflow.

Author: hmert

.github/workflows/action.yml

@@ -1,9 +1,5 @@
 name: Check Markdown links
 on:
-  push:
-    branches: [ live ]
-  schedule:
-    - cron: '0 8 * * 1'
   workflow_dispatch:    
 jobs:
   links: