docs/FILE_EXTENSION.md in lite-validators-1.1.0 vs docs/FILE_EXTENSION.md in lite-validators-1.1.1

@@ -16,10 +16,10 @@
 #### Usage
 
 ```ruby
 class User < ActiveRecord::Base
 
-  validates :input_0, file_extension: { include: 'csv' }
-  validates :input_1, file_extension: { exclude: [:png, 'text'] }
+  validates :input0, file_extension: { include: 'csv' }
+  validates :input1, file_extension: { exclude: [:png, 'text'] }
 
 end
 ```