docs: fix link debbuging

Update link for 'Improve debbuging with better Angular error messages' section

Fixed angular#69010

Author: aparzi

adev/src/content/reference/roadmap.md

@@ -270,7 +270,7 @@ As part of the v11 release, we introduced an opt-in preview of webpack 5 in the
 <docs-card title="Faster apps by inlining critical styles in Universal apps" link="Completed Q1 2021" href="guide/ssr">
 Loading external stylesheets is a blocking operation, which means that the browser cannot start rendering your app until it loads all the referenced CSS. Having render-blocking resources in the header of a page can significantly impact its load performance, for example, its first contentful paint. To make apps faster, we have been collaborating with the Google Chrome team on inlining critical CSS and loading the rest of the styles asynchronously.
 </docs-card>
-<docs-card title="Improve debugging with better Angular error messages" link="Completed Q1 2021" href="reference/errors">
+<docs-card title="Improve debugging with better Angular error messages" link="Completed Q1 2021" href="errors">
 Error messages often bring limited actionable information to help developers resolve them. We have been working on making error messages more discoverable by adding associated codes, developing guides, and other materials to ensure a smoother debugging experience.
 </docs-card>
 <docs-card title="Improved developer onboarding with refreshed introductory documentation" link="Completed Q1 2021" href="tutorials">