Insert two spaces in the line break

Markdown notation often requires the insertion of “two spaces” in line breaks.
Required, especially for GitHub. I hate this so much!

Many Markdown apps don’t automatically insert “two spaces” for line breaks, which is very inconvenient.
It is my strong hope that the new Markdown engine in Bear will support line break spaces.

I would like to use only the Enter key for normal line breaks, but when copying text or writing to a Markdown file, can you enable spaces?
Please consider this.