Fix defgroup open and close that were separated during Hook conversion

Problem/Motivation

Rector inadvertently moved some def groups for the following files:

• core/modules/field/src/Hook/FieldHooks.php
• core/modules/system/src/Hook/SystemHooks.php
• core/modules/node/src/Hook/NodeHooks1.php
• core/modules/taxonomy/src/Hook/TaxonomyHooks.php

Check against 11.0 and see what those defgroups used to wrap and add the open and close in the right place.

e.g. in SystemHooks there is

 /**
   * @} End of "defgroup authorize".
   */

But in system.module there is:

/**
 * @defgroup authorize Authorized operations
 * @{

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet