Numbered lists should only happen if the number is only at the start, or after whitespace

Gives this result:

I think numbered lists should only happen if the number is either at the start of the line, or has only whitespace before the number. I think this is a bug. What do you think?

It's a bug at all. The memo content parser is simply written by myself which will only parse part of markdown syntax. And I'm going to find a better solution to fix these unwanted problems.