fix links

Author: mythz

content/docs/extensions/built-in.mdx

@@ -68,6 +68,6 @@ export LLMS_DISABLE="xmas,duckduckgo"
 
 - [core_tools](https://github.com/ServiceStack/llms/tree/main/llms/extensions/core_tools) - [Essential tools](/docs/features/core-tools) for file operations, memory persistence, math calculation & safe code execution
 - [katex](https://github.com/ServiceStack/llms/tree/main/llms/extensions/katex) - Enables rendering of [LaTeX math expressions](/docs/features/katex) in chat responses using KaTeX
-- [pdf](https://github.com/ServiceStack/llms/tree/main/llms/extensions/pdf) - [PDF Studio](/docs/extensions/pdf) for code-first PDF design using Typst, real-time preview & AI assistance
+- [pdf](https://github.com/ServiceStack/llms/tree/main/llms/extensions/pdf) - [PDF Studio](/docs/features/pdf) for code-first PDF design using Typst, real-time preview & AI assistance
 - [system_prompts](https://github.com/ServiceStack/llms/tree/main/llms/extensions/system_prompts) - Configures a library of over [200+ curated system prompts](/docs/features/system-prompts) accessible from the UI
 - [tools](https://github.com/ServiceStack/llms/tree/main/llms/extensions/tools) - Provides [Tools UI](/docs/extensions/tools) and Exposes registered tool definitions via an API endpoint

content/docs/latest.mdx

@@ -73,7 +73,7 @@ Turn your document's JSON schema into strongly typed C#, Python, TypeScript, or
 
 <Screenshot src="/img/pdf/generated-types-csharp.webp" alt="C# Code Generation" />
 
-Check out the full [PDF Studio Documentation](/docs/extensions/pdf) for the complete walkthrough.
+Check out the full [PDF Studio Documentation](/docs/features/pdf) for the complete walkthrough.
 
 The new [Publishing](/docs/features/publishing) extension lets you share your AI creations with the
 world - straight from your workspace. Generate public, read-only links for chat threads, static