Fix typo

_source/about.markdown

@@ -8,4 +8,4 @@ This is my technical blog, where I jot down research notes and findings I don't
 
 Home page: https://thomas.quinot.org / [Email me](mailto:labnotes@thomas.quinot.org)
 
-Site generator: [Jekyll](https://jekyllrb.com/) / version control: [Gitea](https://gitea.com/) ([repo](https://gitea.cuivre.fr.eu.org/thomas/labnotes) / CI/CD: [Drone](https://www.drone.io/)
+Site generator: [Jekyll](https://jekyllrb.com/) / version control: [Gitea](https://gitea.com/) ([repo](https://gitea.cuivre.fr.eu.org/thomas/labnotes)) / CI/CD: [Drone](https://www.drone.io/)