Minor fix to the wrapper tag documentation, the options hash is the last one, added blank hash before that in the args list

This reverts commit 33284014.

Reason: this change doesn't belong to DocRails.

Try to clarify the docs so that it's more clear how the stack behaves.

Conflicts:
	activerecord/lib/active_record/core.rb

This reverts commit 8d7c38b8.

Reason: Lot of the additions aren't adding value.

[ci skip]