bpo-29456: Fix bugs in unicodedata.normalize: u1176, u11a7 and u11c3 (GH-1958)

Hangul composition check boundaries are wrong for the second character
([0x1161, 0x1176) instead of [0x1161, 0x1176]) and third character ((0x11A7, 0x11C3)
instead of [0x11A7, 0x11C3]).
diff --git a/Misc/ACKS b/Misc/ACKS
index 96aad50..25d1db0 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1800,6 +1800,7 @@
 EungJun Yi
 Bob Yodlowski
 Danny Yoo
+Wonsup Yoon
 Rory Yorke
 George Yoshida
 Kazuhiro Yoshida