Corrected documentation regarding validation errors

guides/source/active_record_validations.md

@@ -162,8 +162,8 @@ Person.create(name: nil).valid? # => false
 ```
 
 After Active Record has performed validations, any errors found can be accessed
-through the `errors` instance method, which returns a collection of errors. By
-definition, an object is valid if this collection is empty after running
+through the `errors.messages` instance method, which returns a collection of errors.
+By definition, an object is valid if this collection is empty after running
 validations.
 
 Note that an object instantiated with `new` will not report errors even if it's
@@ -176,17 +176,17 @@ end
 
 >> p = Person.new
 #=> #<Person id: nil, name: nil>
->> p.errors
+>> p.errors.messages
 #=> {}
 
 >> p.valid?
 #=> false
->> p.errors
+>> p.errors.messages
 #=> {name:["can't be blank"]}
 
 >> p = Person.create
 #=> #<Person id: nil, name: nil>
->> p.errors
+>> p.errors.messages
 #=> {name:["can't be blank"]}
 
 >> p.save
@@ -993,12 +993,12 @@ end
 
 person = Person.new
 person.valid? # => false
-person.errors
+person.errors.messages
  # => {:name=>["can't be blank", "is too short (minimum is 3 characters)"]}
 
 person = Person.new(name: "John Doe")
 person.valid? # => true
-person.errors # => []
+person.errors.messages # => {}
 ```
 
 ### `errors[]`