__doc__ should generally be writable

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2022-03-29.17:32:48.885>
labels = ['interpreter-core', 'type-feature', '3.11']
title = '__doc__ should generally be writable'
updated_at = <Date 2022-04-05.07:27:02.781>
user = 'https://github.com/pitrou'

bugs.python.org fields:

activity = <Date 2022-04-05.07:27:02.781>
actor = 'gregory.p.smith'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2022-03-29.17:32:48.885>
creator = 'pitrou'
dependencies = []
files = []
hgrepos = []
issue_num = 47153
keywords = []
message_count = 1.0
messages = ['416277']
nosy_count = 4.0
nosy_names = ['barry', 'gregory.p.smith', 'pitrou', 'scoder']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue47153'
versions = ['Python 3.11']