use Link instead of a

Author: gumaerc

frontends/mit-open/src/pages/UnitsListingPage/UnitsListingPage.tsx

@@ -6,6 +6,7 @@ import {
   Banner,
   Card,
   Container,
+  Link,
   Skeleton,
   Typography,
   styled,
@@ -406,7 +407,7 @@ const UnitsListingPage: React.FC = () => {
       <Banner
         navText={
           <span>
-            <a href={HOME}>Home</a> / MIT units
+            <Link href={HOME}>Home</Link> / MIT units
           </span>
         }
         title="Academic & Professional Learning"