docs: fix highlighting after refactoring

Signed-off-by: heitorlessa <[email protected]>

Author: heitorlessa

docs/core/event_handler/api_gateway.md

@@ -454,7 +454,7 @@ Event Handler **calls global middlewares first**, then middlewares defined at th
 
 === "middleware_global_middlewares_module.py"
 
-    ```python hl_lines="9"
+    ```python hl_lines="8"
     --8<-- "examples/event_handler_rest/src/middleware_global_middlewares_module.py"
     ```