Modern style of InternalsVisibleTo (#263)

Author: sungam3r

src/GraphQLParser/GraphQLParser.csproj

@@ -15,12 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
-      <_Parameter1>$(MSBuildProjectName).Tests</_Parameter1>
-    </AssemblyAttribute>
-    <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
-      <_Parameter1>$(MSBuildProjectName).Benchmarks</_Parameter1>
-    </AssemblyAttribute>
+    <InternalsVisibleTo Include="$(MSBuildProjectName).Tests;$(MSBuildProjectName).Benchmarks"/>
   </ItemGroup>
 
 </Project>