fix relative link (closes #24057)

diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index 4276e9154f84e83092b7c86c726b59eeb418279e..0cc36e9ffdb79dcb20e73e80b11c0eaefc7efa18 100644 (file)
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -619,8 +619,8 @@ Example of working with :class:`date`:
 
 .. _datetime-datetime:
 
-:class:`datetime` Objects
--------------------------
+:class:`.datetime` Objects
+--------------------------
 
 A :class:`.datetime` object is a single object containing all the information
 from a :class:`date` object and a :class:`.time` object.  Like a :class:`date`