Run black with experimental string processing

[BobDotCom]

Summary

Information

• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed).
• This PR is not a code change (e.g. documentation, README, typehinting,
  examples, ...).

Checklist

• I have searched the open pull requests for duplicates.
• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why.

[codecov]

Codecov Report

Merging #1725 (73de693) into master (0de0652) will not change coverage.
The diff coverage is 3.70%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1725   +/-   ##
=======================================
  Coverage   33.19%   33.19%           
=======================================
  Files          96       96           
  Lines       18414    18414           
=======================================
  Hits         6113     6113           
  Misses      12301    12301           

Flag	Coverage Δ
pytest	33.19% <3.70%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
discord/abc.py	22.82% <ø> (ø)
discord/activity.py	37.38% <0.00%> (ø)
discord/bot.py	18.31% <ø> (ø)
discord/channel.py	34.84% <0.00%> (ø)
discord/client.py	28.79% <ø> (ø)
discord/commands/context.py	47.97% <ø> (ø)
discord/commands/core.py	18.17% <ø> (ø)
discord/commands/options.py	16.66% <ø> (ø)
discord/components.py	29.34% <ø> (ø)
discord/embeds.py	25.00% <ø> (ø)
... and 25 more

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