Issue #26106: doc: Move text of licenses to parsed literal block

This change helps to ignore text of PSF, BEOPEN.com and CNRI licenses when
translating the documentation. Patch written by Julien Palard who is
translating Python 3.5 doc to french. Text of other licenses already used
preformatted format.
diff --git a/Misc/ACKS b/Misc/ACKS
index 9134eb9..93a31de 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1069,6 +1069,7 @@
 Joonas Paalasmaa
 Martin Packman
 Shriphani Palakodety
+Julien Palard
 Ondrej Palkovsky
 Mike Pall
 Todd R. Palmer