Update Toad link and remove 'coming soon' label (#350)

Toad is public and available now

Author: gbtami

docs/overview/clients.mdx

@@ -20,6 +20,6 @@ The following clients can be used with an ACP Agent:
   - through the [Agent Client](https://github.com/RAIT-09/obsidian-agent-client) plugin
 - [Sidequery _(coming soon)_](https://sidequery.dev)
 - [Tidewave](https://tidewave.ai/)
-- [Toad _(coming soon)_](https://willmcgugan.github.io/toad-report-2/)
+- [Toad](https://www.batrachian.ai/)
 - [Web Browser with AI SDK](https://github.com/mcpc-tech/ai-elements-remix-template) (powered by [@mcpc/acp-ai-provider](https://github.com/mcpc-tech/mcpc/tree/main/packages/acp-ai-provider))
 - [Zed](https://zed.dev/docs/ai/external-agents)