Fix setup.py register failure with invalid rst in description (#13614).

Original patch by Julien Courteau and Pierre Paul Lefebvre.
diff --git a/Misc/ACKS b/Misc/ACKS
index 0567069..831885b 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -222,6 +222,7 @@
 Scott Cotton
 Greg Couch
 David Cournapeau
+Julien Courteau
 Steve Cousins
 Alex Coventry
 Matthew Dixon Cowles
@@ -621,6 +622,7 @@
 Christopher Lee
 Tennessee Leeuwenburg
 Luc Lefebvre
+Pierre Paul Lefebvre
 Glyph Lefkowitz
 Vincent Legoll
 Kip Lehman