역할 그룹 수정: <%= @role_group.name %>
<%= form_for @role_group, url: update_role_group_path(@role_group), method: :patch, html: { class: 'tabular' } do |f| %>
<%= render partial: 'form', locals: { f: f } %>
<%= f.submit '저장', class: 'button-positive' %>
<%= link_to '취소', '/role_groups', class: 'button' %>
<% end %>