Merge pull request rms-open-letter#1380 from wdenton/patch-1

Add William Denton

Author: neilmcgovern

index.md

@@ -1534,6 +1534,7 @@ identification purposes only and does not constitute endorsement.)</small>
 1. Will Hawkins
 1. Will Hunt (`Half-Shot`)
 1. William D. Jones (`cr1901`)
+1. William Denton
 1. William Gathoye (Collabora)
 1. William Kroes
 1. William Starkey