Docs: parameter name is wrong in the return descriptions of get_the_time(), get_post_time(), and get_post_modified_time()

[behzod]

Parameter name ($id) is wrong in the return descriptions of get_the_time(), get_post_time(), and get_post_modified_time()

current description is:

* @return string|int|false Formatted date string or Unix timestamp if `$id` is 'U' or 'G'. False on failure.

must be:

* @return string|int|false Formatted date string or Unix timestamp if `$d` is 'U' or 'G'. False on failure.

[behzod]

patch

[desrosj]

In 44592:

Docs: Update inaccurate return descriptions.

In the @return tag description for get_post_modified_time(), get_the_time(), and get_post_time(), the $d parameter is incorrectly referred to as $id.

Props behzod.
Fixes #45323.