Fix markdownlint violations in Markdown files. Use when editing .md files, resolving markdownlint violations, or when asked to fix markdown style.
Apply markdownlint rules to fix violations in the target file.
Target: $ARGUMENTS
.md file.#, ##) and fenced code blocks with a language for consistency.#).#, atx_closed # H #, or setext).# in atx headers; MD020/MD021 - one space inside if closed.# H #allow_different_nesting).., ?) in header text.*, +, or -) consistently.-, *, 1.).br_spaces for line break).```bash).[text](url) not (text)[url].<url> or use [text](url).**bold** not ** bold **).[text](url) not [ text ](url).$ before shell commands unless showing output.---) consistently.