docs: make sensitive info more explicit with an example

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

Author: heitorlessa

docs/content/core/tracer.mdx

@@ -17,12 +17,6 @@ Tracer is an opinionated thin wrapper for [AWS X-Ray Python SDK](https://github.
 * Support tracing async methods, generators, and context managers
 * Auto patch supported modules, or a tuple of explicit modules supported by AWS X-Ray
 
-<Note type="warning">
-  <strong>Returning sensitive information from your Lambda handler or functions, where Tracer is used?</strong>
-  <br/><br/>
-  You can disable Tracer from capturing their responses as tracing metadata with <strong><code>capture_response=False</code></strong> parameter in both capture_lambda_handler and capture_method decorators.
-</Note><br/>
-
 ## Initialization
 
 Your AWS Lambda function must have permission to send traces to AWS X-Ray - Here is an example using AWS Serverless Application Model (SAM)
@@ -69,7 +63,15 @@ def handler(event, context):
     charge_id = event.get('charge_id')
     payment = collect_payment(charge_id)
     ...
+```
+
+<Note type="warning">
+  <strong>Returning sensitive information from your Lambda handler or functions, where Tracer is used?</strong>
+  <br/><br/>
+  You can disable Tracer from capturing their responses as tracing metadata with <strong><code>capture_response=False</code></strong> parameter in both capture_lambda_handler and capture_method decorators.
+</Note><br/>
 
+```python:title=do_not_capture_response_as_metadata.py
 # Disables Tracer from capturing response and adding as metadata
 # Useful when dealing with sensitive data
 @tracer.capture_lambda_handler(capture_response=False) # highlight-line