docs(index): add examples repo to external resources

Author: marc0olo

docs/index.mdx

@@ -42,4 +42,5 @@ Teach your AI coding agent the patterns, APIs, and deployment workflows it needs
   <LinkCard title="ICP CLI" description="Command-line tool for ICP development" href="https://cli.internetcomputer.org/0.2/" />
   <LinkCard title="JS SDK" description="JavaScript/TypeScript libraries for ICP" href="https://js.icp.build" />
   <LinkCard title="ICP Skills" description="Skills for agents that write code on ICP" href="https://skills.internetcomputer.org" />
+  <LinkCard title="Examples" description="Working Motoko and Rust canister examples" href="https://github.com/dfinity/examples" />
 </CardGrid>