fix(docs): add & fix missing alt text to store badge images (#24637)

* Fix email footer: add missing alt text to store badge images

* fix: apply consistent formatting using Prettier

---------

Co-authored-by: divulgacheur <contact@theopeltier.me>

server/src/emails/components/footer.template.tsx

@@ -7,14 +7,22 @@ export const ImmichFooter = () => (
       <Column align="center" className="w-6/12 sm:w-full">
         <div>
           <Link href="https://play.google.com/store/apps/details?id=app.alextran.immich" className="object-contain">
-            <Img className="max-w-full" src={`https://immich.app/img/google-play-badge.png`} />
+            <Img
+              alt="Get it on Google Play"
+              className="max-w-full"
+              src={`https://immich.app/img/google-play-badge.png`}
+            />
           </Link>
         </div>
       </Column>
       <Column align="center" className="w-6/12 sm:w-full">
         <div className="h-full p-6">
           <Link href="https://apps.apple.com/sg/app/immich/id1613945652">
-            <Img src={`https://immich.app/img/ios-app-store-badge.png`} alt="Immich" className="max-w-full" />
+            <Img
+              alt="Download on the App Store"
+              className="max-w-full"
+              src={`https://immich.app/img/ios-app-store-badge.png`}
+            />
           </Link>
         </div>
       </Column>