Merge pull request rms-open-letter#2039 from pshc/main

Add signature

Author: neilmcgovern

index.md

@@ -1797,6 +1797,7 @@ identification purposes only and does not constitute endorsement.)</small>
 1. Paula de la Hoz Garrido (Interferencias association president and cofounder)
 1. Paul Aguilar (`penserbjorne` from LIDSOL)
 1. Paul Burdick
+1. Paul Collier
 1. Paul Cutler (former GNOME Foundation)
 1. Paul Fisher (Former FSF employee and union representative)
 1. Paulino Michelazzo (Founder Brazilian Drupal Association, PT-BR Drupal revisor, Pinguino de Honor)