Update dependency mdformat-mkdocs to v4 (#15011)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[mdformat-mkdocs](https://redirect.github.com/kyleking/mdformat-mkdocs)
([changelog](https://redirect.github.com/kyleking/mdformat-mkdocs/releases))
| `==3.1.1` -> `==4.0.0` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/mdformat-mkdocs/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/mdformat-mkdocs/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/mdformat-mkdocs/3.1.1/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/mdformat-mkdocs/3.1.1/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>kyleking/mdformat-mkdocs (mdformat-mkdocs)</summary>

###
[`v4.0.0`](https://redirect.github.com/KyleKing/mdformat-mkdocs/releases/tag/v4.0.0)

[Compare
Source](https://redirect.github.com/kyleking/mdformat-mkdocs/compare/v3.1.1...v4.0.0)

#### What's Changed

- fix!: add newline after title for consistency with MKDocs style by
[@&#8203;KyleKing](https://redirect.github.com/KyleKing) in
[https://github.com/KyleKing/mdformat-mkdocs/pull/44](https://redirect.github.com/KyleKing/mdformat-mkdocs/pull/44)

**Full Changelog**:
https://github.com/KyleKing/mdformat-mkdocs/compare/v3.1.1...v4.0.0

</details>

---

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---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
Co-authored-by: Kyle King <KyleKing@users.noreply.github.com>

scripts/generate_mkdocs.py

@@ -14,8 +14,6 @@ from typing import NamedTuple
 import mdformat
 import yaml
 
-from _mdformat_utils import add_no_escape_text_plugin
-
 
 class Section(NamedTuple):
     """A section to include in the MkDocs documentation."""
@@ -229,12 +227,11 @@ def main() -> None:
 
             f.write(clean_file_content(file_content, title))
 
-    add_no_escape_text_plugin()
     for rule_doc in Path("docs/rules").glob("*.md"):
         # Format rules docs. This has to be completed before adding the meta description
         # otherwise the meta description will be formatted in a way that mkdocs does not
         # support.
-        mdformat.file(rule_doc, extensions=["mkdocs", "admon", "no-escape-text"])
+        mdformat.file(rule_doc, extensions=["mkdocs"])
 
         generate_rule_metadata(rule_doc)