fix(links): add target="_blank" to social media links

Add target="_blank" attribute to the social media links in the footer HTML to ensure they open in new tabs when clicked.

Author: ismaelnt

templates/components/footer.html.hbs

@@ -31,10 +31,10 @@
       <div class="flex flex-column mw8 w-100 measure-wide-l pv2 pv5-m pv2-ns ph4-m ph4-l">
         <h4>{{fluent "footer-social"}}</h4>
         <div class="flex flex-row flex-wrap items-center">
-          <a href="https://twitter.com/rustlang"><img src="/static/images/twitter.svg" alt="twitter logo" title="{{fluent "footer-youtube-alt"}}"/></a>
-          <a href="https://www.youtube.com/channel/UCaYhcUwRBNscFNUKTjgPFiA"><img class="pv2" src="/static/images/youtube.svg" alt="{{fluent "footer-alt-youtube"}}" title="YouTube"/></a>
-          <a href="https://discord.gg/rust-lang"><img src="/static/images/discord.svg" alt="discord logo" title="{{fluent "footer-discord-alt"}}"/></a>
-          <a href="https://github.com/rust-lang"><img src="/static/images/github.svg" alt="github logo" title="{{fluent "footer-github-alt"}}"/></a>
+          <a href="https://twitter.com/rustlang" target="_blank"><img src="/static/images/twitter.svg" alt="twitter logo" title="{{fluent "footer-youtube-alt"}}"/></a>
+          <a href="https://www.youtube.com/channel/UCaYhcUwRBNscFNUKTjgPFiA" target="_blank"><img class="pv2" src="/static/images/youtube.svg" alt="{{fluent "footer-alt-youtube"}}" title="YouTube"/></a>
+          <a href="https://discord.gg/rust-lang" target="_blank"><img src="/static/images/discord.svg" alt="discord logo" title="{{fluent "footer-discord-alt"}}"/></a>
+          <a href="https://github.com/rust-lang" target="_blank"><img src="/static/images/github.svg" alt="github logo" title="{{fluent "footer-github-alt"}}"/></a>
         </div>
       </div>