Clean up the "struct sequence" / "named tuple" docs #82277

assignee = 'https://github.com/rhettinger'
closed_at = <Date 2019-09-12.20:14:30.808>
created_at = <Date 2019-09-10.22:05:24.573>
labels = ['3.9', 'docs']
title = 'Clean up the "struct sequence" / "named tuple" docs'
updated_at = <Date 2019-09-12.20:14:30.808>
user = 'https://github.com/tim-one'

activity = <Date 2019-09-12.20:14:30.808>
actor = 'rhettinger'
assignee = 'rhettinger'
closed = True
closed_date = <Date 2019-09-12.20:14:30.808>
closer = 'rhettinger'
components = ['Documentation']
creation = <Date 2019-09-10.22:05:24.573>
creator = 'tim.peters'
dependencies = []
files = []
hgrepos = []
issue_num = 38096
keywords = ['patch']
message_count = 13.0
messages = ['351742', '351744', '351896', '351945', '352012', '352040', '352041', '352042', '352076', '352190', '352196', '352197', '352198']
nosy_count = 4.0
nosy_names = ['tim.peters', 'rhettinger', 'docs@python', 'p-ganssle']
pr_nums = ['15895', '15961', '15962', '16010', '16062', '16063']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue38096'
versions = ['Python 3.9']