Remove trailing colons from contents lists

app/helpers/specialist_documents_helper.rb

@@ -31,4 +31,8 @@ def date_hash(date_metadata)
       hash.merge(value[:label] => nice_date_format(value[:values]))
     end
   end
+
+  def strip_trailing_colons(heading)
+    heading.gsub(/\:$/, '')
+  end
 end

app/views/specialist_documents/_nav_item.html.erb

@@ -6,7 +6,7 @@
       data-track-category="contentsClicked"
       data-track-action="leftColumnH<%= heading_level %>"
       data-track-label="<%= heading['id']%>">
-      <%= heading['text'] %>
+      <%= strip_trailing_colons(heading['text']) %>
     </a>
     <% if heading['headers'].present? %>
       <ol class="dash-list">