Add detiber to the list of signees

Author: detiber

index.md

@@ -568,6 +568,7 @@ identification purposes only and does not constitute endorsement.)</small>
 1. Jason Barbier
 1. Jason C. McDonald (a.k.a. CodeMouse92) (MousePaw Media)
 1. Jason Crain (GNOME)
+1. Jason DeTiberus (@detiber)
 1. Jason Griffey
 1. Jason LACAM (open-source and free software defender)
 1. Jason Robinson