Edit ConfigYaml to avoid existing fileName error

Author: rob-foulkrod

Instructions/Labs/AZ400_M08_L14_Monitor_Application_Performance_with_Azure_Load_Testing.md

@@ -378,6 +378,10 @@ Perform the following steps to download the input files for an existing load tes
 1. From the **Folder structure**, navigate to the new created **jmeter** subfolder. Click the **ellipsis(...)** and select **Upload File(s)**.
 1. Using the **Browse** option, navigate to the location of the extracted zip-file, and select both **config.yaml** and **quick_test.jmx**.
 1. Click **Commit** to confirm the file upload into source control.
+1. Within Repos, browse to the **/tests/jmeter** subfolder created and used earlier.
+1. Open the Load Testing \*config.yaml** file. Click **Edit\*\* to allow editing of the file.
+1. Replace the **displayName** and **testId** values with the value **ado_load_test**
+  ![Screenshot of the edited config file.](images/config_edit.png)
 
 #### Task 4: Update the CI/CD workflow YAML definition file