fix href to .com

Author: amarantha-k

src/partials/header-content.hbs

@@ -62,7 +62,7 @@
                   </button>
                 </form>
                 <div class="parent-site">
-                  <a href="couchbase.com">
+                  <a href="https://www.couchbase.com">
                     Couchbase.com
                   </a>
                 </div>