minor edits and remove mixed titles in AM::Validations docs [ci skip]

activemodel/lib/active_model/validations/acceptance.rb

@@ -1,8 +1,7 @@
 module ActiveModel
 
-  # == Active \Model Acceptance \Validator
   module Validations
-    class AcceptanceValidator < EachValidator #:nodoc:
+    class AcceptanceValidator < EachValidator # :nodoc:
       def initialize(options)
         super({ :allow_nil => true, :accept => "1" }.merge!(options))
       end
@@ -27,7 +26,7 @@ module ActiveModel
       #
       #   class Person < ActiveRecord::Base
       #     validates_acceptance_of :terms_of_service
-      #     validates_acceptance_of :eula, message: "must be abided"
+      #     validates_acceptance_of :eula, message: 'must be abided'
       #   end
       #
       # If the database column does not exist, the +terms_of_service+ attribute

activemodel/lib/active_model/validations/confirmation.rb

@@ -1,8 +1,7 @@
 module ActiveModel
 
-  # == Active \Model Confirmation \Validator
   module Validations
-    class ConfirmationValidator < EachValidator #:nodoc:
+    class ConfirmationValidator < EachValidator # :nodoc:
       def validate_each(record, attribute, value)
         if (confirmed = record.send("#{attribute}_confirmation")) && (value != confirmed)
           human_attribute_name = record.class.human_attribute_name(attribute)

activemodel/lib/active_model/validations/exclusion.rb

@@ -2,9 +2,8 @@ require "active_model/validations/clusivity"
 
 module ActiveModel
 
-  # == Active \Model Exclusion \Validator
   module Validations
-    class ExclusionValidator < EachValidator #:nodoc:
+    class ExclusionValidator < EachValidator # :nodoc:
       include Clusivity
 
       def validate_each(record, attribute, value)

activemodel/lib/active_model/validations/format.rb

@@ -1,8 +1,7 @@
 module ActiveModel
 
-  # == Active Model Format Validator
   module Validations
-    class FormatValidator < EachValidator #:nodoc:
+    class FormatValidator < EachValidator # :nodoc:
       def validate_each(record, attribute, value)
         if options[:with]
           regexp = option_call(record, :with)

activemodel/lib/active_model/validations/inclusion.rb

@@ -2,9 +2,8 @@ require "active_model/validations/clusivity"
 
 module ActiveModel
 
-  # == Active \Model Inclusion \Validator
   module Validations
-    class InclusionValidator < EachValidator #:nodoc:
+    class InclusionValidator < EachValidator # :nodoc:
       include Clusivity
 
       def validate_each(record, attribute, value)

activemodel/lib/active_model/validations/numericality.rb

@@ -1,6 +1,5 @@
 module ActiveModel
 
-  # == Active \Model Numericality \Validator
   module Validations
     class NumericalityValidator < EachValidator # :nodoc:
       CHECKS = { :greater_than => :>, :greater_than_or_equal_to => :>=,
@@ -126,7 +125,7 @@ module ActiveModel
       # For example:
       #
       #   class Person < ActiveRecord::Base
-      #     validates_numericality_of :width, less_than: Proc.new { |person| person.height }
+      #     validates_numericality_of :width, less_than: ->(person) { person.height }
       #     validates_numericality_of :width, greater_than: :minimum_weight
       #   end
       def validates_numericality_of(*attr_names)

activemodel/lib/active_model/validations/presence.rb

@@ -1,7 +1,6 @@
 
 module ActiveModel
 
-  # == Active \Model Presence \Validator
   module Validations
     class PresenceValidator < EachValidator # :nodoc:
       def validate(record)

activemodel/lib/active_model/validations/validates.rb

@@ -1,7 +1,6 @@
 require 'active_support/core_ext/hash/slice'
 
 module ActiveModel
-  # == Active Model validates method
   module Validations
     module ClassMethods
       # This method is a shortcut to all default validators and any custom
@@ -129,15 +128,15 @@ module ActiveModel
       # the validation itself.
       #
       #   class Person
-      #     include ActiveModel::Validations
+      #     include ActiveModel::Validations
       #
       #     attr_accessor :name
       #     validates! :name, presence: true
       #   end
       #
       #   person = Person.new
-      #   person.name = ''
-      #   person.valid?
+      #   person.name = ''
+      #   person.valid?
       #   # => ActiveModel::StrictValidationFailed: Name can't be blank
       def validates!(*attributes)
         options = attributes.extract_options!
@@ -149,11 +148,11 @@ module ActiveModel
 
       # When creating custom validators, it might be useful to be able to specify
       # additional default keys. This can be done by overwriting this method.
-      def _validates_default_keys #:nodoc:
+      def _validates_default_keys # :nodoc:
         [:if, :unless, :on, :allow_blank, :allow_nil , :strict]
       end
 
-      def _parse_validates_options(options) #:nodoc:
+      def _parse_validates_options(options) # :nodoc:
         case options
         when TrueClass
           {}

activemodel/lib/active_model/validations/with.rb

@@ -10,7 +10,7 @@ module ActiveModel
         end
     end
 
-    class WithValidator < EachValidator #:nodoc:
+    class WithValidator < EachValidator # :nodoc:
       def validate_each(record, attr, val)
         method_name = options[:with]