README in rmagick_captcha-0.6.3 vs README in rmagick_captcha-0.6.4

@@ -24,10 +24,10 @@
   validate :validate_rmagick_captcha
 
 
 In your controller:
 
-  download_rmagick_catcha :show
+  download_rmagick_captcha :show
 
   def new
     @user = User.new
     session[:user_captcha] = @user.reset_captcha_key
   end