Merge pull request rms-open-letter#871 from Leonidas-from-XIV/add-marek-kubica

Add Marek Kubica

Author: neilmcgovern

index.md

@@ -594,6 +594,7 @@ Signed,
 1. Malte `m4schini` Schink
 1. Mano Marks
 1. Manuel Genovés (GNOME)
+1. Marek Kubica
 1. Margarita Manterola (Debian Developer, member of the Debian Technical Committee)
 1. María Arias de Reyna Domínguez (former OSGeo President, ASF member, maintainer on several FOSS projects)
 1. Mariana Meireles Gontijo (Jupyter contributor, Mozilla contributor)