don't return the wait result, return the actual result

Author: Jasmine

src/GitHub.VisualStudio/Menus/CopyLink.cs

@@ -47,7 +47,9 @@ public async void Activate([AllowNull]object data = null)
 
         public bool CanShow()
         {
-            return IsGitHubRepo().Wait(250); 
+            Task<bool> githubRepoCheckTask = IsGitHubRepo();
+            githubRepoCheckTask.Wait(250);
+            return githubRepoCheckTask.Result;
         }
 
     }