Action to check links: ignore domains that are known to return 403 (#230)

Author: MakisH

.github/workflows/check-links.yml

@@ -1,5 +1,7 @@
 name: Check links
-on: [push, pull_request]
+on:
+  schedule:
+    - cron: '0 0 * * SUN'
 jobs:
   check_links:
     runs-on: ubuntu-latest

.markdown-link-check-config.json

@@ -0,0 +1,11 @@
+{
+  "aliveStatusCodes": [429, 200],
+  "ignorePatterns": [
+    {
+      "pattern": "^https://openfoamwiki.net/"
+    },
+    {
+      "pattern": "^https://doi.org/"
+    }
+  ]
+}