Add Jesse Cooke (rms-open-letter#13)

jc00ke · ehashman · web-flow · commit 69202e0d0258 · 2021-03-23T11:36:07.000-07:00
Co-authored-by: Elana Hashman &lt;ehashman@users.noreply.github.com&gt;
diff --git a/index.md b/index.md
@@ -47,3 +47,4 @@ Signed,
 - Colin Watson (Former Debian Technical Committee member)
 - Xavier Tilley
 - David Thompson (GNU Guile/Guix contributor, ex-FSF)
+- Jesse Cooke
