Markdown * Add a <li> after a <p> result the p become the list

[namnguyen279]

In the demo, it seem like adding additional <li> with a * in markdown result a normal behaviour, however with new document (delete all the content in the demo), writing a paragraph then adding a * after breakline result the paragraph above become the list, this is unexpected due to most of user may want to create new list after line break ..