Fix typo in DirectionalHint Callout type

[Lawrence Win (lawrencewin)]

Platforms Impacted

• iOS
• macOS
• win32 (Office)
• windows
• android

Description of changes

There's a typo in the DirectionalHint type for Callout's directionalHint prop, where "bottomLeftEdge" is spelled as "bottonLeftEdge". This PR fixes this so the linter stops spitting an incorrect error.

Pull request checklist

This PR has considered (when applicable):

• Automated Tests
• Documentation and examples
• Keyboard Accessibility
• Voiceover
• Internationalization and Right-to-left Layouts

[Saad Najmi (Saadnajmi)]

You'll have to update this too: https://github.com/microsoft/fluentui-react-native/blob/main/packages/components/Callout/macos/FRNCalloutManager.m#L18-L33

[Saad Najmi (Saadnajmi)]

Which.. after that, we'll have to ensure that the change makes it internally and doesn't cause regressions for partners who don't update their bundles..

[Patrick Boyd (PPatBoyd)]

Which.. after that, we'll have to ensure that the change makes it internally and doesn't cause regressions for partners who don't update their bundles..

FWIW there are no current users of the enum value that I could find in any Office repos