fix reference

Author: bodewig

src/main/net-constraints-nunit4/NetFramework/XMLUnit.NUnit4.Constraints.NetFramework.csproj

@@ -54,8 +54,8 @@
     <RootNamespace>Org.XmlUnit.Constraints</RootNamespace>
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="nunit.framework, Version=2.6.4.14350, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
-      <HintPath>..\..\..\..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
+    <Reference Include="nunit.framework, Version=4.3.2.0, Culture=neutral, PublicKeyToken=2638cd05610744eb">
+      <HintPath>..\..\..\..\packages\NUnit.4.3.2\lib\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="System" />