bpo-37548: Document range of atan, acos and asin (GH-14717)

diff --git a/Misc/ACKS b/Misc/ACKS
index c011999..31f8dda 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -251,6 +251,7 @@
 Arnaud Calmettes
 Daniel Calvelo
 Tony Campbell
+Giovanni Cappellotto
 Brett Cannon
 Tristan Carel
 Mike Carlton