* Fix alternate lang tags

* prettier

* Scope down the change

---------

Co-authored-by: Dan Abramov <[email protected]>

# Conflicts:
#	.github/workflows/beta_site_lint.yml
#	beta/package.json
#	beta/src/content/learn/installation.md
#	beta/src/content/learn/start-a-new-react-project.md
#	beta/src/sidebarLearn.json
#	beta/yarn.lock
#	content/community/conferences.md
#	content/community/courses.md
#	content/community/examples.md
#	content/community/external-resources.md
#	content/community/meetups.md
#	content/community/support.md
#	content/community/videos.md
#	content/docs/add-react-to-a-website.md
#	content/docs/cdn-links.md
#	content/docs/code-splitting.md
#	content/docs/composition-vs-inheritance.md
#	content/docs/create-a-new-react-app.md
#	content/docs/error-boundaries.md
#	content/docs/fragments.md
#	content/docs/handling-events.md
#	content/docs/hello-world.md
#	content/docs/higher-order-components.md
#	content/docs/hooks-intro.md
#	content/docs/hooks-overview.md
#	content/docs/hooks-reference.md
#	content/docs/integrating-with-other-libraries.md
#	content/docs/jsx-in-depth.md
#	content/docs/react-without-es6.md
#	content/docs/react-without-jsx.md
#	content/docs/reference-react-dom-server.md
#	content/docs/reference-react-dom.md
#	content/docs/reference-react.md
#	content/docs/release-channels.md
#	content/docs/render-props.md
#	content/docs/rendering-elements.md
#	content/docs/static-type-checking.md
#	content/docs/typechecking-with-proptypes.md
#	content/docs/web-components.md
#	src/site-constants.js
#	yarn.lock

Catch up legacy docs branch

This reverts commit 41b1fed.