Update tutorial.ipynb (#3510)

tutorial.ipynb

@@ -530,7 +530,7 @@
         "<img src=\"https://user-images.githubusercontent.com/26833433/98702494-b71c4e80-237a-11eb-87ed-17fcd6b3f066.jpg\">\n",
         "\n",
         "This is the **official YOLOv5 🚀 notebook** authored by **Ultralytics**, and is freely available for redistribution under the [GPL-3.0 license](https://choosealicense.com/licenses/gpl-3.0/). \n",
-        "For more information please visit https://github.com/ultralytics/yolov5 and https://www.ultralytics.com. Thank you!"
+        "For more information please visit https://github.com/ultralytics/yolov5 and https://ultralytics.com. Thank you!"
       ]
     },
     {