Update DiffEngine.csproj

Author: SimonCropp

src/DiffEngine/DiffEngine.csproj

@@ -3,7 +3,7 @@
     <TargetFrameworks>netstandard2.0;netstandard2.1;net5.0;net6.0;net7.0;netcoreapp3.1;netcoreapp3.0;netcoreapp2.1;netcoreapp2.0</TargetFrameworks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(OS)' == 'Windows_NT' ">
-    <TargetFrameworks>netstandard2.0;netstandard2.1;net461;net5.0;net6.0;net7.0;netcoreapp3.1;netcoreapp3.0;netcoreapp2.1;netcoreapp2.0;net48</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;netstandard2.1;net5.0;net6.0;net7.0;netcoreapp3.1;netcoreapp3.0;netcoreapp2.1;netcoreapp2.0;net461;net48</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <Using Remove="System.Net.Http" />