single-title

Linter: a document has one top-level heading, its title.

Example#

doc.md:

# Guide

# Install

markright check reports:

doc.md:3: a second top-level heading (single-title)
markright: 1 issue(s)

Fixed:

# Guide

## Install

Turning it off#

linters:
  disable: [single-title]

[linters]
disable = ["single-title"]

More in Rules.