Fixed minor typo.

Author: Dom

lib/sass/rails/railtie.rb

@@ -23,7 +23,7 @@ module SassContext
     config.sass.logger           = Sass::Rails::Logger.new
 
     # Set the default stylesheet engine
-    # It can be overridedden by passing:
+    # It can be overridden by passing:
     #     --stylesheet_engine=sass
     # to the rails generate command
     config.app_generators.stylesheet_engine config.sass.preferred_syntax