markdownlint/doc-build/md037.md

This rule is triggered when emphasis markers (bold, italic) are used, but they have spaces between the markers and the text:

Here is some ** bold ** text.

Here is some * italic * text.

Here is some more __ bold __ text.

Here is some more _ italic _ text.

To fix this, remove the spaces around the emphasis markers:

Here is some **bold** text.

Here is some *italic* text.

Here is some more __bold__ text.

Here is some more _italic_ text.

Rationale: Emphasis is only parsed as such when the asterisks/underscores aren't surrounded by spaces. This rule attempts to detect where they were surrounded by spaces, but it appears that emphasized text was intended by the author.