Fixed code

Author: Pash10g

docs/50-testing/1-test-list.mdx

@@ -1,6 +1,6 @@
 # 📋 List all rentals
 
-Lets list all rentals in the database. We will use `http://localhost:8080` after the server is started:
+Lets list all rentals in the database. We will use `http://localhost:8000` after the server is started:
 ```bash
 symfony server:start
 ```
@@ -10,7 +10,7 @@ Sometimes you may need to clear the cache before you can see the changes in the
 php bin/console cache:clear
 ```
 
-The following diagram shows the sequence of requests and responses that are made when the `http://localhost:8080` is accessed in the browser:
+The following diagram shows the sequence of requests and responses that are made when the `http://localhost:8000` is accessed in the browser:
 
 ![List all rentals](../../static/img/list-rentals.png)