Update Examples/Streaming/README.md

Co-authored-by: Tim Condon <[email protected]>

Author: sebsto

Examples/Streaming/README.md

@@ -230,7 +230,7 @@ The content of the input `ByteBuffer` depends on how you invoke the function:
 
 Here is an example of Lambda function URL payload:
 
-```
+```json
 // This is an example of payload received when
 // the function is invoked by a Lambda function URL.
 // You can use the `FunctionURL` structure provided by the Lambda Event library to decode this