Do not add newlines after block image at the end of md file #3428
Description
This is a follow up to #3282.
With the new block images a file that only contains an image link will have an empty line added to the end.
The markdown in question already parsed as a block image before. So theoretically it's not necessary to add an empty line after it.
I think we have the same issue with tables at the end of the doc and other block elements. In order to ensure they are not added to the following paragraph we add an empty line below. However this is not needed at the end of the file. There we want to keep an existing empty line but avoid adding new ones.
Originally posted by @max-nextcloud in #3282 (comment)