Updating the project reference for windows react-native

Author: Alistair Nelson

windows/RNFS/RNFS.csproj

@@ -20,7 +20,7 @@
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)' != 'Development'">
-    <ReactWindowsRoot>..\..</ReactWindowsRoot>
+    <ReactWindowsRoot>..\..\..</ReactWindowsRoot>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <PlatformTarget>x86</PlatformTarget>
@@ -131,7 +131,7 @@
     <EmbeddedResource Include="Properties\RNFS.rd.xml" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\node_modules\react-native-windows\ReactWindows\ReactNative\ReactNative.csproj">
+    <ProjectReference Include="$(ReactWindowsRoot)\react-native-windows\ReactWindows\ReactNative\ReactNative.csproj">
       <Project>{c7673ad5-e3aa-468c-a5fd-fa38154e205c}</Project>
       <Name>ReactNative</Name>
     </ProjectReference>