bpo-37534: Allow adding Standalone Document Declaration when generating XML documents (GH-14912)

diff --git a/Misc/ACKS b/Misc/ACKS
index fe24a56..1b5febb 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -659,6 +659,7 @@
 Brian Harring
 Jonathan Hartley
 Travis B. Hartwell
+Henrik Harutyunyan
 Shane Harvey
 Larry Hastings
 Tim Hatch