lab5 minor update

Author: sdutta9

labs/lab5/readme.md

@@ -280,7 +280,7 @@ This will require a new NGINX config file, for the Server and Location Blocks. F
 1. Time to Test!!! Go back to Visual Studio Terminal and run below commands to test if your new `proxy_pass` configuration is working as expected. Run this command several times.
 
    ```bash
-    docker exec -it $NAME-nginx-plus curl -s http://cafe.example.com |grep Server
+    curl -s http://cafe.example.com |grep Server
     ```
 
     ```bash