standardize Docker casing

README.md

@@ -625,7 +625,7 @@ _See https://github.com/awesome-foss/awesome-sysadmin#dns_
 
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-- [DOCAT](https://github.com/randombenj/docat) - Host your docs. Simple. Versioned. Fancy. `MIT` `Python/docker`
+- [DOCAT](https://github.com/randombenj/docat) - Host your docs. Simple. Versioned. Fancy. `MIT` `Python/Docker`
 - [Docspell](https://docspell.org) - Auto-tagging document organizer and archive. ([Source Code](https://github.com/eikek/docspell)) `GPL-3.0` `Scala/Java`
 - [EveryDocs](https://github.com/jonashellmann/everydocs-core/) - A simple Document Management System for private use with basic functionality to organize your documents digitally. `GPL-3.0` `Ruby`
 - [I, Librarian](https://i-librarian.net) - I, Librarian can organize PDF papers and office documents. It provides a lot of extra features for students and research groups both in industry and academia. ([Demo](https://i-librarian.net/demo/), [Source Code](https://github.com/mkucej/i-librarian-free)) `GPL-3.0` `PHP`