Update README.md

README.md

@@ -14,7 +14,7 @@ end
 
 # Instantiating it runs the validations.
 me  = Person.new(name: 'Robb')
-you = Person.new(name: '')      # => "ArgumentError: Name can't be blank"
+you = Person.new(name: '')      # => ArgumentError: "Name can't be blank"
 ```
 
 Note how Person's two lines of code are nothing new: `attr_reader` is standard Ruby. [`validates`](https://guides.rubyonrails.org/active_record_validations.html) is standard Rails. I use classes like these as Data Transfer Objects at my system boundaries.