Above hero image is added by following front matter parameters:
featuredImage: true
featuredImageCaption: |
Photo by <a href="https://unsplash.com/@ilyapavlov?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Ilya Pavlov</a> on <a href="https://unsplash.com/s/photos/coding?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Unsplash</a>