docs: update Claude Code provider link in release notes for versions 3.21 and 3.21.4

Author: hannesrudolph

docs/update-notes/v3.21.4.mdx

@@ -4,7 +4,7 @@ This release introduces the new Claude Code provider for local CLI integration a
 
 ## Use Your Claude Max Subscription with Roo Code
 
-You can now use your Claude Max subscription directly in Roo Code through our new Claude Code provider ([#4864](https://github.com/RooCodeInc/Roo-Code/pull/4864), [#5038](https://github.com/RooCodeInc/Roo-Code/pull/5038)):
+You can now use your Claude Max subscription directly in Roo Code through our new [Claude Code provider](/providers/claude-code) (thanks Cline!) ([#4864](https://github.com/RooCodeInc/Roo-Code/pull/4864), [#5038](https://github.com/RooCodeInc/Roo-Code/pull/5038)):
 
 - **Leverage Your Existing Subscription**: Connect your Claude Max plan to Roo Code through the Claude CLI
 - **No Additional API Costs**: Use your subscription benefits instead of paying per-token API rates

docs/update-notes/v3.21.mdx

@@ -14,7 +14,7 @@ The Roo Marketplace makes it easy to extend Roo Code's functionality with powerf
 
 ## Use Your Claude Max Subscription with Roo Code
 
-You can now use your Claude Max subscription directly in Roo Code through our new Claude Code provider ([#4864](https://github.com/RooCodeInc/Roo-Code/pull/4864), [#5038](https://github.com/RooCodeInc/Roo-Code/pull/5038)):
+You can now use your Claude Max subscription directly in Roo Code through our new [Claude Code provider](/providers/claude-code) (thanks Cline!) ([#4864](https://github.com/RooCodeInc/Roo-Code/pull/4864), [#5038](https://github.com/RooCodeInc/Roo-Code/pull/5038)):
 
 - **Leverage Your Existing Subscription**: Connect your Claude Max plan to Roo Code through the Claude CLI
 - **No Additional API Costs**: Use your subscription benefits instead of paying per-token API rates