This reverts commit 4147ab73.

* add `end` to end of class definition
* add a blank line between explanation and example code

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Correct ArgumentError message in ActiveSupport conversions docs [ci s…

This was happened after this commit https://github.com/rails/rails/commit/2ebf47aea21ff8ac10681e53e78dd7a0e5c31c6e

Change AbstractRequest to ActionDispatch::Request

AbstractRequest has been deprecated, updating to refer to ActionDispatch::Request instead.

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When used by ActionMailer, ActionView should automatically use the correct MIME type just as it does when used by ActionDispatch

Improve Docs of ActiveSupport::TimeZone [ci skip]

Fix displaying mailer previews on non local requests.

[ci skip] Remove useless "@api public/private"

Fixed helpers submit button Examples [ci skip]

`restrict_with_error` message will now respect owner’s human name

Other public APIs do not have these annotations.

When config `action_mailer.show_previews` is set, previews are displayed
regardless of local request check.

Improved ActiveRecord Connection Pool docs [ci skip]

Removed mocha from Active Record Part 2

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Don't hardcode table name

The schema_migrations table name is configurable. We should use this value when checking for ignored table names when dumping schema instead of a hardcoded value.

Ref #21618

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Update documentation to remove 'desirable' suggestion for what is not a clear cut approach

Improved explanation of the <script> tag CSRF behavior