Fix a missed TFM in a sample app. Possibly a bad merge.
<!-- Begin NuGet Section -->
<PropertyGroup>
- <TargetFrameworkMoniker>uap10.0</TargetFrameworkMoniker>
+ <TargetFramework>uap10.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="WinObjC.Frameworks" Version="*" />
