Update Discord and Contributing Guide URLs (#12847)

* Update Discord and Contributing Guide URLs

* Update __init__.py

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

---------

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

utils/loggers/__init__.py

@@ -382,7 +382,7 @@ class GenericLogger:
                 prefix = colorstr("ClearML: ")
                 LOGGER.warning(
                     f"{prefix}WARNING ⚠️ ClearML is installed but not configured, skipping ClearML logging."
-                    f" See https://github.com/ultralytics/yolov5/tree/master/utils/loggers/clearml#readme"
+                    f" See https://docs.ultralytics.com/yolov5/tutorials/clearml_logging_integration"
                 )
         else:
             self.clearml = None