Adding example on how to work with optional security routes

Author: leandrodamascena

docs/core/event_handler/api_gateway.md

@@ -1105,7 +1105,7 @@ Security schemes are declared at the top-level first. You can reference them glo
 
 === "Global security schemes and optional security per route"
 
-    ```python title="security_schemes_global_and_optional.py" hl_lines="20 35-44"
+    ```python title="security_schemes_global_and_optional.py" hl_lines="22 37-46"
     --8<-- "examples/event_handler_rest/src/security_schemes_global_and_optional.py"
     ```
 

examples/event_handler_rest/src/security_schemes_global_and_optional.py

@@ -14,7 +14,7 @@
 app = APIGatewayRestResolver(enable_validation=True)
 
 
-@app.get("/protected", security=[{"oauth": ["admin"]}])  # (1)!
+@app.get("/protected", security=[{"oauth": ["admin"]}])
 def protected() -> dict:
     return {"hello": "world"}