Add missing URL to VS Code desktop module

Without this the plugin will only work if the user has happened to log
in before and that URL was previously saved.

vscode-desktop/main.tf

@@ -35,6 +35,8 @@ resource "coder_app" "vscode" {
     data.coder_workspace.me.name,
     "&folder=",
     var.folder,
+    "&url=",
+    data.coder_workspace.me.access_url,
     "&token=$SESSION_TOKEN",
     ]) : join("", [
     "vscode://coder.coder-remote/open?owner=",