Revert "Test"

This reverts commit d9d6489.

Author: npentrel

.github/workflows/linkcheck.yml

@@ -6,8 +6,9 @@
 #
 name: run-htmltest-external
 on:
-  pull_request:
-    types: [opened, synchronize]
+  schedule:
+    # 10am UTC on Mondays
+    - cron: "0 10 * * 1"
 jobs:
   htmltest:
     if: github.repository_owner == 'viamrobotics'