add code comments for test.

test/E2ETest/TyeRunTests.cs

@@ -146,15 +146,16 @@ services:
 
             await RunHostingApplication(application, new HostOptions(), async (app, uri) =>
             {
+                //The backend calls the Function app via Dapr InvokeMethod. So test that that func has a sidecar, and being proxied.
                 var backendUri = await GetServiceUrl(client, uri, "dapr-test-project");
-
+                
+                //Wait for the services to start
                 await Task.Delay(10000);
                 
                 var backendResponse = await client.GetAsync(backendUri);
                 
                 Assert.True(backendResponse.IsSuccessStatusCode);
                 
-                //The backend calls the Function app via Dapr InvokeMethod. So test that that func has a sidecar, and being proxied. 
                 var responseContent = await backendResponse.Content.ReadAsStringAsync();
                 Assert.Contains("Welcome to Azure Functions!", responseContent);
             });