Improve MacOsDeviceInfo documentation

[ueman]

Description

This PR improves the documentation of the MacOsDeviceInfo class.
It fixes some typos and formatting incompatibilities with Dart's documentation generator.

See https://pub.dev/documentation/device_info_plus_platform_interface/1.0.0/model_macos_device_info/MacOsDeviceInfo-class.html for how it currently looks like.

Related Issues

None as far as I am aware.

Checklist

Before you create this PR confirm that it meets all requirements listed below by checking the relevant checkboxes ([x]).
This will ensure a smooth and quick review process. Updating the pubspec.yaml and changelogs is not required.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• All existing and new tests are passing.
• I updated/added relevant documentation (doc comments with ///).
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Breaking Change

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• Yes, this is a breaking change (please indicate a breaking change in CHANGELOG.md and increment major revision).
• No, this is not a breaking change.

[ueman]

It seems like the formatting step didn't complete. I'm not sure why though. Please let me know if I need to change anything in that regard.

[mhadaily]

LGTM, Thanks @ueman, I have triggered rebuild again, let's see.

[ueman]

It fails because it runs into a timeout: https://github.com/fluttercommunity/plus_plugins/blob/main/.github/workflows/all_plugins.yaml#L35-L55 @mhadaily

[miquelbeltran]

Timeout increase did the trick!