Merge pull request #11295 from ankit8898/master

Replaced older rocket sign to new  ":" 

activemodel/examples/validations.rb

@@ -25,5 +25,5 @@ def persisted?
 p person1.valid? # => false
 p person1.errors.messages # => {:name=>["can't be blank"]}
 
-person2 = Person.new(:name => "matz")
+person2 = Person.new(name: 'matz')
 p person2.valid? # => true