mkdocs: format copywrite text

Author: practicalli-johnny

mkdocs.yml

@@ -4,7 +4,7 @@ site_name: Practicalli Clojure Web Services
 site_url: https://practical.li/clojure-web-services
 site_description: Practical guide to Clojure Web Services and APIs
 site_author: Practicalli
-copyright: Copyright &copy 2023  Practicali <a href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>
+copyright: Copyright &copy 2023 Practicali <a href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0</a>
 repo_url: https://github.com/practicalli/clojure-web-services/
 edit_uri: https://github.com/practicalli/clojure-web-services/edit/main/docs/