update forums link

src/components/Footer.vue

@@ -36,7 +36,7 @@
                 <h4 class="is-title-6">SOCIAL</h4><a href="https://twitter.com/Group_Income" target="_blank" alt="Twitter">Twitter</a>
                 <a href="https://crib.social/okturtles" target="_blank" alt="Fediverse">Fediverse</a>
                 <a href="https://www.youtube.com/@GroupIncome" target="_blank" alt="Youtube">YouTube</a>
-                <a href="https://forums.okturtles.com/index.php?board=9.0" target="_blank" alt="Forums">Forums</a>
+                <a href="https://github.com/okTurtles/group-income/discussions" target="_blank" alt="Forums">Forums</a>
             </div>
         </div>
     </div>

src/posts/what-makes-a-good-voting-system.mdx

@@ -151,7 +151,7 @@ And remember, some types of decisions are better decided without a formal vote!
 
 Thanks for reading our first blog post! We hope you've enjoyed it!
 
-If you like what you see here and are interested in participating in this project (whether as a contributor or to take part in pilot studies), please get in touch on [Twitter](https://twitter.com/Group_Income), [Gitter Chat](https://gitter.im/okTurtles/group-income), or on [our forums](https://forums.okturtles.com/index.php?board=9.0)!
+If you like what you see here and are interested in participating in this project (whether as a contributor or to take part in pilot studies), please get in touch on [Twitter](https://twitter.com/Group_Income), [Slack](https://join.slack.com/t/okturtles/shared_invite/zt-10jmpfgxj-tXQ1MKW7t8qqdyY6fB7uyQ), or on [our forums](https://github.com/okTurtles/group-income/discussions)!
 
 Post by [Greg Slepak](https://twitter.com/taoeffect), with help from [Andrea Devers](https://twitter.com/dotmacro), [Trent Oswald](https://twitter.com/therebelrobot), and [Simon Grondin](http://simongrondin.name).