Rails: How to change the text on the submit button in a Rails Form

i have listed my _form.html.erb file below what i would like to do is change the text on the submit button i know how to do it in html but not shure how to do it in Rails 3

%= form_for(@faq) do |f| %>
  <% if @faq.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@faq.errors.count, "error") %> prohibited this faq from being saved:</h2>

      <ul>
      <% @faq.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :question %><br />
    <%= f.text_field :question %>
  </div>
  <div class="field">
    <%= f.label :answer %><br />
    <%= f.text_area :answer %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

instead of

<%= f.submit  %>

put

<%= f.submit "My Submit Text" %>

If you want to change all create and update form submit tags, this change is easy to make. Modify config/locales/en.yml like so:

en:
  helpers:
    submit:
      create: "Crear un %{model}"
      update: "Confirmar cambios al %{model} creado"