Fix broken link in what.html.erb

Fix the link on `Discover how to make your Open Source journey approachable and sustainable`.

Author: ChloeLiang

app/views/pages/what.html.erb

@@ -82,7 +82,7 @@
     CodeTriage is all about helping people get started and get more involved in Open Source. The service is a volunteer (and Open Source) effort. A huge thank you to <a href="https://github.com/codetriage/codetriage/graphs/contributors">all our contributors!</a>. If you have ideas for tools that can help people make impactful contributions to open source please let us know with an <a href="https://github.com/codetriage/codetriage/issues">issue</a>.
   </p>
   <p>
-    If you're not a <%= link_to "CodeTriage member already", user_github_omniauth_authorize_path, method: :post %>, what are you waiting for? <%= link_to "Discover how to make your Open Source journey approachable and sustainable", user_github_omniauth_authorize_path %>. Get started!
+    If you're not a <%= link_to "CodeTriage member already", user_github_omniauth_authorize_path, method: :post %>, what are you waiting for? <%= link_to "Discover how to make your Open Source journey approachable and sustainable", user_github_omniauth_authorize_path, method: :post %>. Get started!
   </p>
   <br />
   <center>