Fix intro links

book/src/introduction.md

@@ -3,9 +3,9 @@
 **Geometry Script** is a scripting API for Blender's Geometry Nodes.
 It makes complicated node trees more managable and easy to share.
 
-* [Full coverage of nodes](/available_nodes) available in your Blender version
-* Clean, easy to use [Python API](#introduction)
-* External [IDE integration](#introduction) for better completions and hot reload
+* [Full coverage of nodes](./api/basics/using-nodes.md) available in your Blender version
+* Clean, easy to use [Python API](./api/basics.md)
+* External [IDE integration](./setup/external-editing.md) for better completions and hot reload
 
 Here's a simple example of what's possible with a short script: