add link to review agent source in docs

Author: msukkari

docs/docs/agents/review-agent.mdx

@@ -10,7 +10,7 @@ codebase that the agent may fetch to perform the review.
 
 This agent provides codebase-aware reviews for your PRs. For each diff, this agent fetches relevant context from Sourcebot and feeds it into an LLM for a detailed review of your changes.
 
-The AI Code Review Agent is open source and packaged in [Sourcebot](https://github.com/sourcebot-dev/sourcebot). To get started using this agent, [deploy Sourcebot](/self-hosting/overview)
+The AI Code Review Agent is [open source](https://github.com/sourcebot-dev/sourcebot/tree/main/packages/web/src/features/agents/review-agent) and packaged in [Sourcebot](https://github.com/sourcebot-dev/sourcebot). To get started using this agent, [deploy Sourcebot](/self-hosting/overview)
 and then follow the configuration instructions below.
 
 ![AI Code Review Agent Example](/images/review_agent_example.png)