Make missing-yield/raises-doc respect no-docstring-rgx option

[DanielNoord]

• Write a good description on what the PR does.
• Create a news fragment with towncrier create <IssueNumber>.<type> which will be
  included in the changelog. <type> can be one of: new_check, removed_check, extension,
  false_positive, false_negative, bugfix, other, internal. If necessary you can write
  details or offer examples on how the new change is supposed to work.
• If you used multiple emails or multiple names when contributing, add your mails
  and preferred name in script/.contributors_aliases.json

Type of Changes

	Type
✓	🐛 Bug fix

Description

Closes #4743

[coveralls]

Pull Request Test Coverage Report for Build 2999482043

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.002%) to 95.334%

---

Totals
Change from base Build 2997493502:	0.002%
Covered Lines:	17001
Relevant Lines:	17833

---

💛 - Coveralls

[Pierre-Sassoulas]

👌

[Pierre-Sassoulas]

The fail in documentation is unrelated to the pull request.