review comments

src/csharp/Grpc.Core/build/net45/Grpc.Core.targets

@@ -1,16 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <!-- 
-    'SkipGrpcNativeLibsCopying' should not be enabled in normal use.
+    'SkipGrpcNativeLibsCopy' should not be enabled in normal use.
 
     It only exists to support special scenarios where user wants to copy the native libraries
     to output directory themselves, in a separate build step or script.
 
-    If you use this flag, it's your responsibility to ensure that correct versions of 
-    native libraries are used at all times. Mismatching native and managed library
-    versions are not supported.
+    Only use this flag if you really know what you're doing. It's your responsibility to ensure that matching versions of 
+    the Grpc.Core.dll assembly and the native libraries are used at all times.
   -->
-  <ItemGroup Condition="'$(SkipGrpcNativeLibsCopying)' != 'true'">
+  <ItemGroup Condition="'$(SkipGrpcNativeLibsCopy)' != 'true'">
     <Content Include="$(MSBuildThisFileDirectory)..\..\runtimes\win\native\grpc_csharp_ext.x86.dll">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       <Link>grpc_csharp_ext.x86.dll</Link>