Add link to GitHub repo.

Author: EdOverflow

_config.yml

@@ -1,5 +1,4 @@
 title: Hacker101
 description: Hacker101 is a free class for web security. Whether you're a programmer with an interest in bug bounties or a seasoned security professional, Hacker101 has something to teach you.
 google_analytics: UA-49905813-8
-baseurl: '/'
 markdown: kramdown

_layouts/default.html

@@ -23,7 +23,7 @@ <h1>{{ page.title }}</h1>
     {{ content }}
 
     <br>
-    <a href="/" class="home">return home</a>
+    <a href="/" class="home">return home</a> | <a href="https://github.com/Hacker0x01/hacker101/issues/new" class="edit">suggest changes</a>
     <footer>
       <p><a href="https://www.hackerone.com/start-hacking" class="powered-by">Powered by HackerOne</a></p>
     </footer>

assets/css/style.css

@@ -226,7 +226,7 @@ figure img {
     padding: 10px 15px;
     background: rgba(0, 0, 0, 0.7);
 }
-.home {
+.home, .edit {
     font-family: monospace;
     text-decoration: none;
     font-size: 15px;