Update documentation for Beta components

[behowell]

This issue tracks that all components included in beta have had their documentation updated to conform to the standards listed here: https://github.com/microsoft/fluentui/blob/master/rfcs/convergence/authoring-stories.md

• Accordion - chore: improve Accordion docs #19769
• Avatar
• Badge - chore: improve Badge docs #19571
• Button - Storybook/Button documentation #19298
• CompundButton
• Divider
• FluentProvider
• Icon - Add Icons to Public Docsite #19283
• Link
• Menu - chore(react-positioning): Add documentation for Fluent positioning #19616
• MenuButton
• Popover - chore(Popover): Implement Popover documentation #19634
• Text - chore(Text): Updated storybook documentation #19773
• ToggleButton
• Tooltip
• Image - react-image: added storybook documentation #19687

[PeterDraex]

There are few planned changes to the way we write stories:

1. Putting each story in its own file will be mandatory. Please use the way described in paragraph 7 for all components.
2. It's okay to place all .stories.tsx files into a stories folder.
3. Relative imports will not be supported. For example import { Button } from '../../Button'; will need to be replaced with import { Button } from '@fluentui/react-button';.

These changes are necessary to enable easy integration with CodeSandbox. It’d be great if updated documentation respected these rules already, so we would avoid rewrites.

Pull request with proposed changes: #19827

[layershifter]

@behowell is it still a thing? Can be this closed?

[layershifter]

As beta was released and there was also done a ton of work on improving docs 👉 closing this.
We only don't have docs for icons, but it's tracked in the separate issue.

Feel free to reopen if there is need.