chore: retry link check on 429 (#1426)

Author: ruquanzhao

.github/workflows/check-md-links.yaml

@@ -15,4 +15,5 @@ jobs:
     - uses: gaurav-nelson/github-action-markdown-link-check@v1
       with:
         use-quiet-mode: 'yes'
-        use-verbose-mode: 'yes'
+        use-verbose-mode: 'yes'
+        config-file: '.github/workflows/mlc_config.json'

.github/workflows/mlc_config.json

@@ -0,0 +1,11 @@
+{
+  "ignorePatterns": [
+    {
+      "pattern": "^https://x.com"
+    }
+  ],
+  "timeout": "20s",
+  "retryOn429": true,
+  "retryCount": 3,
+  "fallbackRetryDelay": "30s"
+}