refine co-authro page

app/views/desktop/co_authors/index.html.erb

@@ -1,3 +1,6 @@
+<h1>list all coauthor</h1>
+<%= link_to "New Co-Author", new_desktop_co_author_path %>
+<%= link_to "New Type", "#" %>
 <table>
   <tr>
     <th>Name</th>
@@ -13,6 +16,7 @@
     <td><%= co_author.co_author %></td>
     <td><%= co_author.email %></td>
     <td><%= co_author.type%></td>
+    <td><%= link_to 'Edit', edit_desktop_co_author_path(co_author) %></td>
     <td><%= link_to 'Destroy', desktop_co_author_path(co_author), method: :delete, confirm: 'Are you sure?'  %></td>
   </tr>
 <% end %>