add/update meta tags

[bunnybot]

Mirrored from Codeberg
Created on Fri Jan 23 12:57:31 CET 2026 by janus

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In order to manipulate the search engine or to display desired predefined content on social media, we should perhaps add the following items to the header of the page:

• meta property="og:image"
• meta property="og:title"
• meta property="og:type"
• meta property="og:url"
• meta name="keywords"
• meta name="description"