Remove abbreviation.

Author: Gustavo Villa

lib/generators/haml/scaffold/templates/_form.html.haml

@@ -3,8 +3,8 @@
     #error_explanation
       %h2= "#{pluralize(@<%= singular_table_name %>.errors.count, "error")} prohibited this <%= singular_table_name %> from being saved:"
       %ul
-        - @<%= singular_table_name %>.errors.full_messages.each do |msg|
-          %li= msg
+        - @<%= singular_table_name %>.errors.full_messages.each do |message|
+          %li= message
 
 <% for attribute in attributes -%>
   .field