fix careers btn link

Author: petertait

_layouts/about.html

@@ -21,7 +21,7 @@ <h1 class="hero-title col-1-1">{% if page.hero-title %}{{page.hero-title}}{% els
     <section class="content-container grid">
       <article class="content col-1-1">
         {{content}}
-        <a href="#careers-list" class="btn btn-primary btn-block">SOUND GOOD TO YOU? COME JOIN US!</a>
+        <a href="{{ site.baseurl }}/careers" class="btn btn-primary btn-block">SOUND GOOD TO YOU? COME JOIN US!</a>
       </article>
     </section>
     <!-- /.content-container -->