Merge pull request rms-open-letter#1511 from buritos/patch-1

Update index.md

Author: neilmcgovern

index.md

@@ -113,6 +113,7 @@ identification purposes only and does not constitute endorsement.)</small>
 1. Alexandra Pereira (Collabora)
 1. Alexandra Stehr
 1. Alexandre Dulaunoy (former FSF associate member #53)
+1. Alexandros Bourantas
 1. Alex Arslan (Julia contributor, former Julia community manager)
 1. Alex Brown
 1. Alex Callejas