Fix documentation file name

System.Device.Spi/System.Device.Spi.nfproj

@@ -16,7 +16,7 @@
     <AssemblyName>System.Device.Spi</AssemblyName>
     <TargetFrameworkVersion>v1.0</TargetFrameworkVersion>
     <NF_IsCoreLibrary>True</NF_IsCoreLibrary>
-    <DocumentationFile>bin\$(Configuration)\Windows.Devices.Spi.xml</DocumentationFile>
+    <DocumentationFile>bin\$(Configuration)\System.Device.Spi.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup>
     <SignAssembly>true</SignAssembly>