Minor typo corrected in doc.go

doc.go

@@ -25,7 +25,7 @@ They return type error to avoid the issue discussed in the following, where err
 http://stackoverflow.com/a/29138676/3158232
 https://github.com/go-playground/validator/issues/134
 
-validator only returns nil or ValidationErrors as type error; so in you code all you need to do
+validator only returns nil or ValidationErrors as type error; so, in your code all you need to do
 is check if the error returned is not nil, and if it's not type cast it to type ValidationErrors
 like so err.(validator.ValidationErrors)