gh-85453: Consistent backquotes on None occurences across datetime.rst (#118282)

diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index b1b5e04c74b0666b3a891b64ffb1f46a38417415..f40c6cea83820c4146bb6353508e7550a8d752b8 100644 (file)
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -1735,7 +1735,7 @@ day, and subject to adjustment via a :class:`tzinfo` object.
    * ``fold in [0, 1]``.
 
    If an argument outside those ranges is given, :exc:`ValueError` is raised. All
-   default to 0 except *tzinfo*, which defaults to :const:`None`.
+   default to 0 except *tzinfo*, which defaults to ``None``.
 
 Class attributes: