Add help text in budget groups admin index

Co-authored-by: decabeza <alberto@decabeza.es>

app/views/admin/budget_groups/index.html.erb

@@ -7,6 +7,8 @@
   <%= link_to t("admin.budget_groups.form.create"), new_admin_budget_group_path %>
 </header>
 
+<%= render Admin::Budgets::HelpComponent.new("budget_groups") %>
+
 <% if @groups.any? %>
   <h3><%= t("admin.budget_groups.amount", count: @groups.count) %></h3>
   <table>

app/views/admin/budgets/index.html.erb

@@ -3,7 +3,7 @@
   <%= link_to t("admin.budgets.index.new_link"), new_admin_budget_path %>
 </header>
 
-<%= render Admin::Budgets::HelpComponent.new %>
+<%= render Admin::Budgets::HelpComponent.new("budgets") %>
 <%= render "shared/filter_subnav", i18n_namespace: "admin.budgets.index" %>
 
 <% if @budgets.any? %>