Update markdown link check config

Author: silvanocerza

markdown-link-check-config.json

@@ -6,5 +6,8 @@
     {
       "pattern": "https?://(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?):\\d*"
     }
-  ]
+  ],
+  "aliveStatusCodes": [200, 206],
+  "retryCount": 3,
+  "retryOn429": true
 }