Fix Active Record validation error messages markup in guides

The other way it was not marking the text as italic, it was showing the
underlines as normal text.

Also fixes some code examples indentation and # => marks in Active Model
and Active Record guides.

[ci skip]

1 files changed, 21 insertions, 21 deletions

diff --git a/guides/source/active_record_basics.md b/guides/source/active_record_basics.md
index cb64cf39f3..68c6416e89 100644
--- a/guides/source/active_record_basics.md
+++ b/guides/source/active_record_basics.md
@@ -147,15 +147,15 @@ Active Record objects can be created from a hash, a block or have their attribut
 For example, given a model `User` with attributes of `name` and `occupation`, the `create` method call will create and save a new record into the database:
 
 ```ruby
-  user = User.create(name: "David", occupation: "Code Artist")
+user = User.create(name: "David", occupation: "Code Artist")
 ```
 
 Using the `new` method, an object can be created without being saved:
 
 ```ruby
-  user = User.new
-  user.name = "David"
-  user.occupation = "Code Artist"
+user = User.new
+user.name = "David"
+user.occupation = "Code Artist"
 ```
 
 A call to `user.save` will commit the record to the database.
@@ -163,10 +163,10 @@ A call to `user.save` will commit the record to the database.
 Finally, if a block is provided, both `create` and `new` will yield the new object to that block for initialization:
 
 ```ruby
-  user = User.new do |u|
-    u.name = "David"
-    u.occupation = "Code Artist"
-  end
+user = User.new do |u|
+  u.name = "David"
+  u.occupation = "Code Artist"
+end
 ```
 
 ### Read
@@ -174,23 +174,23 @@ Finally, if a block is provided, both `create` and `new` will yield the new obje
 Active Record provides a rich API for accessing data within a database. Below are a few examples of different data access methods provided by Active Record.
 
 ```ruby
-  # return array with all records
-  users = User.all
+# return array with all records
+users = User.all
 ```
 
 ```ruby
-  # return the first record
-  user = User.first
+# return the first record
+user = User.first
 ```
 
 ```ruby
-  # return the first user named David
-  david = User.find_by_name('David')
+# return the first user named David
+david = User.find_by_name('David')
 ```
 
 ```ruby
-  # find all users named David who are Code Artists and sort by created_at in reverse chronological order
-  users = User.where(name: 'David', occupation: 'Code Artist').order('created_at DESC')
+# find all users named David who are Code Artists and sort by created_at in reverse chronological order
+users = User.where(name: 'David', occupation: 'Code Artist').order('created_at DESC')
 ```
 
 You can learn more about querying an Active Record model in the [Active Record Query Interface](active_record_querying.html) guide.
@@ -200,9 +200,9 @@ You can learn more about querying an Active Record model in the [Active Record Q
 Once an Active Record object has been retrieved, its attributes can be modified and it can be saved to the database.
 
 ```ruby
-  user = User.find_by_name('David')
-  user.name = 'Dave'
-  user.save
+user = User.find_by_name('David')
+user.name = 'Dave'
+user.save
 ```
 
 ### Delete
@@ -210,8 +210,8 @@ Once an Active Record object has been retrieved, its attributes can be modified
 Likewise, once retrieved an Active Record object can be destroyed which removes it from the database.
 
 ```ruby
-  user = User.find_by_name('David')
-  user.destroy
+user = User.find_by_name('David')
+user.destroy
 ```
 
 Validations