multiprocessing documentation should note behavior when process with Lock dies

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-05-14.22:10:29.712>
labels = ['3.7', '3.8', '3.9', '3.10', '3.11', 'type-feature', 'library']
title = 'multiprocessing documentation should note behavior when process with Lock dies'
updated_at = <Date 2021-05-14.22:10:29.712>
user = 'https://github.com/kushal-kumaran'

bugs.python.org fields:

activity = <Date 2021-05-14.22:10:29.712>
actor = 'kushal-kumaran'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-05-14.22:10:29.712>
creator = 'kushal-kumaran'
dependencies = []
files = []
hgrepos = []
issue_num = 44138
keywords = []
message_count = 1.0
messages = ['393695']
nosy_count = 1.0
nosy_names = ['kushal-kumaran']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue44138'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10', 'Python 3.11']