UX: better user image for embed/topics

UX: better user image for embed/topics

diff --git a/app/views/embed/topics.html.erb b/app/views/embed/topics.html.erb
index c4a67fb..5a46601 100644
--- a/app/views/embed/topics.html.erb
+++ b/app/views/embed/topics.html.erb
@@ -16,7 +16,7 @@
                   </div>
                 <%- end %>
                 <div class='topic-author-avatar-timestamp'>
-                  <img src="<%= t.user.avatar_template.gsub('{size}', '20') %>">
+                  <img src="<%= t.user.avatar_template.gsub('{size}', '40') %>">
                   <span class="topic-author-username">
                     <%= t.user.username %>
                   </span>

GitHub sha: 103629d2