BUG: copy-paste error: input and output types might be different

Author: dzenanz

{{cookiecutter.project_name}}/include/itk{{cookiecutter.filter_name}}.h

@@ -43,7 +43,7 @@ class {{ cookiecutter.filter_name }} : public ImageToImageFilter<TInputImage, TO
   static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
 
   using InputImageType = TInputImage;
-  using OutputImageType = TInputImage;
+  using OutputImageType = TOutputImage;
   using InputPixelType = typename InputImageType::PixelType;
   using OutputPixelType = typename OutputImageType::PixelType;