Add top margin for page title

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/stylesheets/framework/typography.scss

@@ -177,7 +177,7 @@ body {
 }
 
 .page-title {
-  margin-top: 0px;
+  margin-top: $gl-padding;
   line-height: 1.3;
   font-size: 1.25em;
   font-weight: 600;