Update README.md

Added link to docs

Author: jcjiang

README.md

@@ -11,7 +11,7 @@ The Coder Gateway plugin lets you open [Coder](https://github.com/coder/coder)
 workspaces in your JetBrains IDEs with a single click.
 
 > [!NOTE]  
-> We recommend using the [Coder Toolbox plugin](https://github.com/coder/coder-jetbrains-toolbox), which offers significant stability and connectivity benefits over Gateway. Future updates of the Coder plugin on Jetbrains will be made to the Toolbox plugin.
+> We recommend using the [Coder Toolbox plugin](https://github.com/coder/coder-jetbrains-toolbox), which offers significant stability and connectivity benefits over Gateway. Future updates of the Coder plugin on Jetbrains will be made to the Toolbox plugin. Reference our [documentation](https://coder.com/docs/user-guides/workspace-access/jetbrains/toolbox) for more information.
 
 
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