Updated wording in YAML error [noradio]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@847 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/fixtures.rb

@@ -247,7 +247,7 @@ def read_fixture_files
           yaml = YAML::load(erb_render(IO.read(yaml_file_path)))
           yaml.each { |name, data| self[name] = Fixture.new(data, @class_name) } if yaml
         rescue Exception=>boom
-          raise Fixture::FormatError, "a YAML error occured parsing #{yaml_file_path}. Please note that YAML must be indented with 2,4 or 8 spaces. Tabs are not allowed. Please have a look at http://www.yaml.org/faq.html"
+          raise Fixture::FormatError, "a YAML error occured parsing #{yaml_file_path}. Please note that YAML must be consistently indented using spaces. Tabs are not allowed. Please have a look at http://www.yaml.org/faq.html"
         end
       elsif File.file?(csv_file_path)
         # CSV fixtures