Updating Login Form Labels

<%- if @topic_view.topic.tags.present? %>
<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

Is it possible to update the login form field labels. I just need the Email label to read ‘Login.’ I was hoping I could do it with a custom i18n yml file. I’m hoping it’s I’m just putting it in the front folder for detection right now it’s in mysite/lang/en.yml