fix(www): update broken link to headless ui (#3542)

The link appears to have broken at some point, I've updated it

Co-authored-by: shadcn <[email protected]>

apps/www/content/docs/components/data-table.mdx

@@ -12,7 +12,7 @@ links:
 
 Every data table or datagrid I've created has been unique. They all behave differently, have specific sorting and filtering requirements, and work with different data sources.
 
-It doesn't make sense to combine all of these variations into a single component. If we do that, we'll lose the flexibility that [headless UI](https://tanstack.com/table/v8/docs/guide/introduction#what-is-headless-ui) provides.
+It doesn't make sense to combine all of these variations into a single component. If we do that, we'll lose the flexibility that [headless UI](https://tanstack.com/table/v8/docs/introduction#what-is-headless-ui) provides.
 
 So instead of a data-table component, I thought it would be more helpful to provide a guide on how to build your own.