Check links every week instead of every month

Author: JohT

.github/workflows/check-links-in-documentation.yml

@@ -9,7 +9,7 @@ on:
       - 'README.md'
       - '.github/workflows/check-links-in-documentation.yml' # also run when this file was changed
   schedule:
-    - cron: "15 6 1 * *" # On the first day of each month at 6:15 o'clock
+    - cron: "50 7 * * 1" # Every week at 07:50 AM on Monday 
 
 jobs:
   analysis-results: