docs: remove jquery (@fehmer) (#7320)

### Description

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### Checks

- [ ] Adding/modifying Typescript code?
  - [ ] I have used `qs`, `qsa` or `qsr` instead of JQuery selectors.
- [ ] Adding quotes?
- [ ] Make sure to include translations for the quotes in the
description (or another comment) so we can verify their content.
- [ ] Adding a language?
- Make sure to follow the [languages
documentation](https://github.com/monkeytypegame/monkeytype/blob/master/docs/LANGUAGES.md)
  - [ ] Add language to `packages/schemas/src/languages.ts`
- [ ] Add language to exactly one group in
`frontend/src/ts/constants/languages.ts`
  - [ ] Add language json file to `frontend/static/languages`
- [ ] Adding a theme?
- Make sure to follow the [themes
documentation](https://github.com/monkeytypegame/monkeytype/blob/master/docs/THEMES.md)
  - [ ] Add theme to `packages/schemas/src/themes.ts`
  - [ ] Add theme to `frontend/src/ts/constants/themes.ts`
  - [ ] Add theme css file to `frontend/static/themes`
- [ ] Add some screenshots of the theme, especially with different test
settings (colorful, flip colors) to your pull request
- [ ] Adding a layout?
- [ ] Make sure to follow the [layouts
documentation](https://github.com/monkeytypegame/monkeytype/blob/master/docs/LAYOUTS.md)
  - [ ] Add layout to `packages/schemas/src/layouts.ts`
  - [ ] Add layout json file to `frontend/static/layouts`
- [ ] Adding a font?
- Make sure to follow the [themes
documentation](https://github.com/monkeytypegame/monkeytype/blob/master/docs/FONTS.md)
  - [ ] Add font file to `frontend/static/webfonts`
  - [ ] Add font to `packages/schemas/src/fonts.ts`
  - [ ] Add font to `frontend/src/ts/constants/fonts.ts`
- [ ] Check if any open issues are related to this PR; if so, be sure to
tag them below.
- [ ] Make sure the PR title follows the Conventional Commits standard.
(https://www.conventionalcommits.org for more info)
- [ ] Make sure to include your GitHub username prefixed with @ inside
parentheses at the end of the PR title.

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Closes #7186

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README.md

@@ -7,7 +7,6 @@
 [![Firebase](https://img.shields.io/badge/firebase-ffca28?style=for-the-badge&logo=firebase&logoColor=black)](https://firebase.google.com/)
 [![Fontawesome](https://img.shields.io/badge/fontawesome-538DD7?style=for-the-badge&logo=fontawesome&logoColor=white)](https://fontawesome.com/)
 [![HTML5](https://img.shields.io/badge/html5-%23E34F26.svg?style=for-the-badge&logo=html5&logoColor=white)](https://developer.mozilla.org/en-US/docs/Web/HTML)
-[![JQuery](https://img.shields.io/badge/jQuery-0769AD?style=for-the-badge&logo=jquery&logoColor=white)](https://jquery.com/)
 [![MongoDB](https://img.shields.io/badge/-MongoDB-13aa52?style=for-the-badge&logo=mongodb&logoColor=white)](https://www.mongodb.com/)
 [![OXLint](https://img.shields.io/badge/%E2%9A%93%20oxlint-2b3c5a?style=for-the-badge&logoColor=white)](https://oxc.rs/docs/guide/usage/linter.html)
 [![PNPM](https://img.shields.io/badge/pnpm-F69220?style=for-the-badge&logo=pnpm&logoColor=white)](https://pnpm.io/)