Permalinks are a feature of the Table of Contents extension, which is part of the standard Markdown library. The extension inserts an anchor at the end of each headline, which makes it possible to directly link to a specific section of the document.
Add the following lines to
markdown_extensions: - toc: permalink: true
This will add a link containing the paragraph symbol
¶ at the end of each headline (exactly like on the page you're currently viewing), which Material for MkDocs will make appear on hover. In order to change the text of the permalink, a string can be passed, e.g.:
markdown_extensions: - toc: permalink: Link
When enabled, permalinks are inserted automatically.