Link Configuration.md doc to README (#695)

Signed-off-by: Jinbo Wang <jinbwan@microsoft.com>

Author: testforstephen

README.md

@@ -107,6 +107,8 @@ Please also check the documentation of [Language Support for Java by Red Hat](ht
   - `integratedTerminal` - VS Code integrated terminal.
   - `externalTerminal` - External terminal that can be configured in user settings.
 
+Pro Tip: The documentation [Configuration.md](https://github.com/microsoft/vscode-java-debug/blob/master/Configuration.md) provides lots of samples to demonstrate how to use these debug configurations, recommend to take a look.
+
 ## Troubleshooting
 Reference the [troubleshooting guide](https://github.com/Microsoft/vscode-java-debug/blob/master/Troubleshooting.md) for common errors.