#17987: properly document support.captured_xxx.

Patch by Dmi Baranov.
diff --git a/Misc/ACKS b/Misc/ACKS
index 1392977..087db24 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -65,6 +65,7 @@
 Jeff Balogh
 Manuel Balsera
 Matt Bandy
+Dmi Baranov
 Michael J. Barber
 Daniel Barclay
 Nicolas Bareil