fix: add verison number to rdp script

Author: Parkreiner

windows-rdp/README.md

@@ -14,8 +14,9 @@ Enable Remote Desktop + a web based client on Windows workspaces, powered by [de
 ```tf
 # AWS example. See below for examples of using this module with other providers
 module "windows_rdp" {
+  source      = "github.com/coder/modules/windows-rdp"
+  version     = "1.0.15"
   count       = data.coder_workspace.me.start_count
-  source      = "github.com/coder/modules//windows-rdp"
   agent_id    = resource.coder_agent.main.id
   resource_id = resource.aws_instance.dev.id
 }