Update desktop.mdx (#938)

Add disclaimer for desktop client doc and releases link

website/content/docs/api-clients/desktop.mdx

@@ -8,6 +8,8 @@ description: |-
 
 # Boundary Desktop
 
+-> Boundary Desktop is currently an Alpha release still undergoing final testing before its official release. Should you experience any bugs or lack of desired functionality, please let us know so that we can evaluate a fix. You can open an issue at https://github.com/hashicorp/boundary/issues/new/choose. Your help is greatly appreciated! 
+
 Boundary Desktop is a standalone application that provides a simple interface
 for browsing and connecting to targets on your local computer (macOS currently
 supported). Launch a session in Boundary Desktop and then make a connection
@@ -24,7 +26,7 @@ $ boundary dev
 
 ### Install Boundary Desktop
 
-1. Download the latest .dmg installer from our [releases page](https://releases.hashicorp.com/boundary/).
+1. Download the latest .dmg installer from our [releases page](https://github.com/hashicorp/boundary-ui/releases/tag/v1.0.0-alpha).
 1. Double-click the downloaded .dmg to run the installer
 1. Drag and drop Boundary into the applications folder
 ![](/img/boundary-desktop-drag-to-install.png)