typo: WellKnownTYpes to WellKnownTypes (#1977)

Co-authored-by: Chris Pulman <[email protected]>

Author: TimothyMakkison

InterfaceStubGenerator.Shared/InterfaceStubGenerator.Shared.projitems

@@ -21,7 +21,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Models\MethodModel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Models\ParameterModel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Models\TypeConstraint.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Models\WellKnownTYpes.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Models\WellKnownTypes.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Parser.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)SourceWriter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)UniqueNameBuilder.cs" />