Programming FAQ about "What is delegation?": Fix typos

[Dominik1123]

BPO	40348
Nosy	@merwok, @ZackerySpytz, @miss-islington, @Dominik1123, @iritkatriel
PRs	bpo-40348: Fix typos in the programming FAQ #19729 [3.8] bpo-40348: Fix typos in the programming FAQ (GH-19729) #19730 [3.7] bpo-40348: Fix typos in the programming FAQ (GH-19729) #19731

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2020-10-04.00:17:04.568>
created_at = <Date 2020-04-20.21:57:48.524>
labels = ['type-feature', '3.8', '3.9', 'docs']
title = 'Programming FAQ about "What is delegation?": Fix typos'
updated_at = <Date 2020-10-04.00:17:04.567>
user = 'https://github.com/Dominik1123'

bugs.python.org fields:

activity = <Date 2020-10-04.00:17:04.567>
actor = 'rhettinger'
assignee = 'docs@python'
closed = True
closed_date = <Date 2020-10-04.00:17:04.568>
closer = 'rhettinger'
components = ['Documentation']
creation = <Date 2020-04-20.21:57:48.524>
creator = 'Dominik V.'
dependencies = []
files = []
hgrepos = []
issue_num = 40348
keywords = ['patch']
message_count = 6.0
messages = ['366896', '367213', '367365', '367368', '367370', '377902']
nosy_count = 6.0
nosy_names = ['eric.araujo', 'docs@python', 'ZackerySpytz', 'miss-islington', 'Dominik V.', 'iritkatriel']
pr_nums = ['19729', '19730', '19731']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue40348'
versions = ['Python 3.8', 'Python 3.9']

[Dominik1123]

https://docs.python.org/3/faq/programming.html#what-is-delegation

The code example uses self._outfile with a single leading underscore, however in the subsequent text it is referred to with a double leading underscore:

• [...] calling the underlying self.__outfile.write() method.
• All other methods are delegated to the underlying self.__outfile object.

These should be fixed to use a single leading underscore as well.

[merwok]

Thanks! Would you like to make the changes yourself?

[miss-islington]

New changeset caf1aad by Zackery Spytz in branch 'master':
bpo-40348: Fix typos in the programming FAQ (GH-19729)
caf1aad

[miss-islington]

New changeset 25def5f by Miss Islington (bot) in branch '3.7':
bpo-40348: Fix typos in the programming FAQ (GH-19729)
25def5f

[miss-islington]

New changeset 9412f4d by Miss Islington (bot) in branch '3.8':
bpo-40348: Fix typos in the programming FAQ (GH-19729)
9412f4d