fix(documentation): updated link to CORS_OPTIONS in Networking Settings (#31873)

Author: ankur-zignite91

docs/docs/configuration/networking-settings.mdx

@@ -18,7 +18,7 @@ The following keys in `superset_config.py` can be specified to configure CORS:
 
 - `ENABLE_CORS`: Must be set to `True` in order to enable CORS
 - `CORS_OPTIONS`: options passed to Flask-CORS
-  ([documentation](https://flask-cors.corydolphin.com/en/latest/api.html#extension))
+  ([documentation](https://flask-cors.readthedocs.io/en/latest/api.html#extension))
 
 
 ## HTTP headers