add python code type

Author: dfangl

content/en/docs/LocalStack Tools/transparent-execution-mode/patched-sdks.md

@@ -11,15 +11,15 @@ The Lambda runtime in LocalStack uses patched AWS SDKs, which are configured to
 This behavior is enabled by default for most Lambda runtimes when using LocalStack Pro.
 
 Assuming you had a Python Lambda handler that attempts to list all S3 buckets. In the past, you had to manually configure the `endpoint_url` parameter on the boto3 client (and potentially use environment switches for dev/prod in your test code):
-```
+```python
 import boto3
 def handler(event, context):
     client = boto3.client("s3", endpoint_url="http://localhost:4566")
     print(client.list_buckets())
 ```
 
 With the patched AWS SDKs, it now becomes possible to deploy your unmodified production code to LocalStack, simply creating a boto3 client with default settings. The invocations of the boto3 client will be automatically forwarded to the local APIs:
-```
+```python
 import boto3
 def handler(event, context):
     client = boto3.client("s3")