Your image link is not working because of that weird extra dot that amazon puts in there. But I copied it and had a look at it in the browser. That is a great comic from Don Rosa. But the true gold and one and only comic about Scrooge is this one (I think it is the most popular comic in Europe):
That's why I removed the link afterwards. I understood that there's _ _ in the link and it means italic in the markdown styling. I just learned to make better comments
Finally
I know how to bold , italic text in the comments.
You could have tricked the system with html by wrapping it in proper img-tags. Bit more tricky than markdown but not much.
I learned basic html 18 months ago. I think much of it is forgotten due to lack of practice. I do use Raw HTML editor for posting because normal editor sucks on smartphone.