Fix absolute link

Author: dshevtsov

src/index.html

@@ -18,7 +18,7 @@
  projects
  <br></br>
  Some content was consolidated or moved to different guides. If you can't find a topic, check the <a
- href="https://devdocs.magento.com/migrated.html">Migrated topics</a> list for the new link.
+ href="{{site.baseurl}}/migrated.html">Migrated topics</a> list for the new link.
  </header>
 </section>