docs: add serper desc

Author: supreme-gg-gg

src/app/docs/kagent/examples/crewai-byo/page.mdx

@@ -52,7 +52,8 @@ Two complete examples are available in the `python/samples/crewai/` directory:
 
 ## Creating a BYO Agent resource
 
-Now that you have your own custom agent image, you can create a BYO Agent resource for kagent to manage. Serper is used in this example for web search, but you can replace it with any other tool or API.
+Now that you have your own custom agent image, you can create a BYO Agent resource for kagent to manage.
+You will need a Serper API Key that you can get for free [from their website](https://serper.dev). Serper is a Google Search API used by most CrewAI examples and tutorials, but you can also plug in your own tools.
 
 1. Save the API keys for your LLM provider and web search service in environment variables.
 
@@ -173,6 +174,7 @@ Example output: The output includes both the response as well as the details of
     }
   ],
 ...
+}
 ```
 
 ### A2A host CLI