fix mongo description style wrong.

DOCUMENTATION/content/documentation/index.md

@@ -915,11 +915,7 @@ run from any cli: <br>`curl -X PURGE https://yourwebsite.com/`.
     	// ...
     
     ],
-
-	// ...
-
-],
-```
+    ```
 
 5 - Open your Laravel's `.env` file and update the following variables: