Updates link check configuration

Changes the link check configuration to handle GitHub docs rate limiting more effectively.

Instead of retrying requests, it now considers 429 (Too Many Requests) as an acceptable status code to avoid being blocked.

Author: edumserrano

.github/markdown-link-check-config-for-repo.json

@@ -39,7 +39,5 @@
       "description": "Avoids 403s from GitHub docs"
     }
   ],
-  "retryOn429": true,
-  "retryCount": 3,
-  "fallbackRetryDelay": "3s"
+  "aliveStatusCodes": [429, 200]
 }