Update label-tool.md

Fixed https error

Author: NHaiby

articles/cognitive-services/form-recognizer/quickstarts/label-tool.md

@@ -45,7 +45,7 @@ You'll use the Docker engine to run the sample labeling tool. Follow these steps
     ```
     docker run -it -p 3000:80 containerpreview.azurecr.io/microsoft/cognitive-services-form-recognizer-custom-supervised-labeltool eula=accept
     ```
-    This will make the sample labeling tool available through a web browser. Go to [https://localhost:3000](https://localhost:3000).
+    This will make the sample labeling tool available through a web browser. Go to [http://localhost:3000](http://localhost:3000).
 
 > [!NOTE]
 > You can also label documents and train models using the Form Recognizer REST API. To train and Analyze with the REST API, see [Train with labels using the REST API and Python](./python-labeled-data.md).