Update ObservableProperty docs

[Iridium-IO]

• Updated signature of generated Broadcast method sample code
• Added sample code to [NotifyPropertyChangedRecipients] section

[learn-build-service-prod]

Learn Build status updates of commit 6a8f0aa:

💡 Validation status: suggestions

File	Status	Preview URL	Details
docs/mvvm/generators/ObservableProperty.md	💡Suggestion	View	Details

docs/mvvm/generators/ObservableProperty.md

• Line 17, Column 125: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyPropertyChangedForAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 17, Column 239: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyCanExecuteChangedForAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 17, Column 357: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyDataErrorInfoAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 17, Column 461: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyPropertyChangedRecipientsAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[learn-build-service-prod]

Learn Build status updates of commit 116c363:

💡 Validation status: suggestions

File	Status	Preview URL	Details
docs/mvvm/generators/ObservableProperty.md	💡Suggestion	View	Details

docs/mvvm/generators/ObservableProperty.md

• Line 17, Column 125: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyPropertyChangedForAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 17, Column 239: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyCanExecuteChangedForAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 17, Column 357: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyDataErrorInfoAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.
• Line 17, Column 461: [Suggestion: learn-site-link-broken - See documentation] Link '/dotnet/api/communitytoolkit.mvvm.componentmodel.NotifyPropertyChangedRecipientsAttribute' points to a learn site page that doesn't exist. Check the path or URL and update the link.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[Iridium-IO]

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

The irony of the instructions link not resolving anywhere.

[jfversluis]

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

The irony of the instructions link not resolving anywhere.

It does, but its an internal link :)