FIX: remove padding from onebox site icon in composer preview

FIX: remove padding from onebox site icon in composer preview

diff --git a/app/assets/stylesheets/common/d-editor.scss b/app/assets/stylesheets/common/d-editor.scss
index b29aeb1..86e16bb 100644
--- a/app/assets/stylesheets/common/d-editor.scss
+++ b/app/assets/stylesheets/common/d-editor.scss
@@ -206,7 +206,8 @@
 .d-editor-preview img {
   padding-bottom: 1.4em;
   &.emoji,
-  &.avatar {
+  &.avatar,
+  &.site-icon {
     padding-bottom: 0;
   }
 }

GitHub sha: cd94ac94