update links in footer (#161)

Author: rosieyohannan

ui/src/partials/article-footer.hbs

@@ -34,7 +34,7 @@
           <img src="{{{uiRootPath}}}/img/link-arrow.svg" alt="Go to Code" class="invisible group-hover:visible ml-2 inline-block w-[13px] h-[13px]">
         </li>
         <li class="group flex items-center">
-          <a href="#">Learn how to contribute</a>
+          <a href="https://github.com/circleci/circleci-docs-static/blob/main/CONTRIBUTING.md">Learn how to contribute</a>
           <img src="{{{uiRootPath}}}/img/link-arrow.svg" alt="Go to Code" class="invisible group-hover:visible ml-2 inline-block w-[13px] h-[13px]">
         </li>
       </ul>
@@ -47,15 +47,15 @@
 
       <ul class="space-y-2 text-link-on-light">
         <li class="group flex items-center">
-          <a href="#">Ask the CircleCI community</a>
+          <a href="https://discuss.circleci.com/">Ask the CircleCI community</a>
           <img src="{{{uiRootPath}}}/img/link-arrow.svg" alt="Go to Code" class="invisible group-hover:visible ml-2 inline-block w-[13px] h-[13px]">
         </li>
         <li class="group flex items-center">
-          <a href="#">Join the research community</a>
+          <a href="https://circleci.com/research/">Join the research community</a>
           <img src="{{{uiRootPath}}}/img/link-arrow.svg" alt="Go to Code" class="invisible group-hover:visible ml-2 inline-block w-[13px] h-[13px]">
         </li>
         <li class="group flex items-center">
-          <a href="#">Visit our support site</a>
+          <a href="https://support.circleci.com/hc/en-us/">Visit our support site</a>
           <img src="{{{uiRootPath}}}/img/link-arrow.svg" alt="Go to Code" class="invisible group-hover:visible ml-2 inline-block w-[13px] h-[13px]">
         </li>
       </ul>