Docblock annotation intendation

[colinodell]

Enforce 4 spaces of indentation for docblock annotations. For example:

Invalid:

/**
 * @ApiFilter(
 *   OrderFilter::class,
 *   properties={"id", "name": "asc", "createdAt", "updatedAt"},
 *   arguments={"orderParameterName"="order"}
 * )
 */

Valid:

/**
 * @ApiFilter(
 *     OrderFilter::class,
 *     properties={"id", "name": "asc", "createdAt", "updatedAt"},
 *     arguments={"orderParameterName"="order"}
 * )
 */