Docs style guide: Code Examples, distinguish between the Tutorial and other documentation

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-05-24.20:49:25.128>
labels = ['3.8', '3.9', '3.10', 'docs']
title = 'For 7.2.7. Code Examples, distinguish between the Tutorial and other documentation'
updated_at = <Date 2021-03-26.03:23:38.984>
user = 'https://github.com/ChasBelov'

bugs.python.org fields:

activity = <Date 2021-03-26.03:23:38.984>
actor = 'rhettinger'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Documentation']
creation = <Date 2020-05-24.20:49:25.128>
creator = 'Chas Belov'
dependencies = []
files = []
hgrepos = []
issue_num = 40758
keywords = []
message_count = 2.0
messages = ['369825', '389537']
nosy_count = 3.0
nosy_names = ['rhettinger', 'docs@python', 'Chas Belov']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue40758'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']