update skill badges on admin member profile

update background colour used for skill badges on admin member profiles
to match the colour used when a member views their own profile.

Author: mikej

app/views/admin/members/_profile.html.haml

@@ -10,7 +10,7 @@
     .mb-4
       %h5 Skills
       - @member.skills.each do |skill|
-        .badge.bg-success= skill.name
+        .badge.bg-secondary= skill.name
 
   .mb-4
     %h5 Dietary Restrictions