doc: Updated maintainers

Merge pull request zircote#830 from DerManoMann/php8-token

Add support for new PHP8 T_NAME_xxx token

Released 2.0.16

feat: info->version must be a string

Prevents the "Structural error at info.version
should be string" validation error

Release 2.0.15

- Support for PHP7.4 zircote#741

PHP 7.4 Support (zircote#722)

Released 2.0.14

Add support to import traits from nested classes

zircote#582

Fixed phpcs, allow CRLF in tests/Fixtures/Customer.php

Added support for $ref in @OA\Header

Fixes zircote#570