README.md in string-direction-1.2.0 vs README.md in string-direction-1.2.1

@@ -16,10 +16,10 @@
 detector.ltr?('english') #=> true
 detector.rtl?('العربية') #=> true
 detector.bidi?('english') #=> false
 ```
 
-But, if you preffer, you can monkey patch `String`:
+But, if you prefer, you can monkey patch `String`:
 
 ```ruby
 String.send(:include, StringDirection::StringMethods)
 
 'english'.direction #=> 'ltr'