fix: Update Claude Agent SDK documentation links

Author: mwbrooks

README.md

@@ -10,7 +10,7 @@ This repo contains the same app built with three different AI agent frameworks.
 
 | App | Directory | Get Started | Framework |
 |-----|-----------|-------------|-----------|
-| **Claude Agent SDK** | `claude-agent-sdk/` | [View README](./claude-agent-sdk/README.md) | [claude-agent-sdk](https://docs.anthropic.com/en/docs/agents/claude-agent-sdk) |
+| **Claude Agent SDK** | `claude-agent-sdk/` | [View README](./claude-agent-sdk/README.md) | [claude-agent-sdk](https://platform.claude.com/docs/en/agent-sdk/overview) |
 | **OpenAI Agents SDK** | `openai-agents-sdk/` | [View README](./openai-agents-sdk/README.md) | [openai-agents](https://openai.github.io/openai-agents-python/) |
 | **Pydantic AI** | `pydantic-ai/` | [View README](./pydantic-ai/README.md) | [pydantic-ai](https://ai.pydantic.dev/) |
 

claude-agent-sdk/README.md

@@ -2,7 +2,7 @@
 
 Meet Casey (it/this/that) — an AI-powered IT helpdesk agent that lives in Slack. Casey can troubleshoot common issues, search knowledge base articles, reset passwords, check system status, and create support tickets, all without leaving the conversation.
 
-Built with [Bolt for Python](https://docs.slack.dev/tools/bolt-python/) and the [Claude Agent SDK](https://docs.anthropic.com/en/docs/agents/claude-agent-sdk) using models from [Anthropic](https://www.anthropic.com).
+Built with [Bolt for Python](https://docs.slack.dev/tools/bolt-python/) and the [Claude Agent SDK](https://platform.claude.com/docs/en/agent-sdk/overview) using models from [Anthropic](https://www.anthropic.com).
 
 ## App Overview