link datetime better and add naïve to spelling list
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index d9019cb..77aa001 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -729,14 +729,14 @@
 
     .. attribute:: not_before
 
-        :type: datetime.datetime
+        :type: :class:`datetime.datetime`
 
     A naïve datetime representing the beginning of the validity period for the
     certificate in UTC. This value is inclusive.
 
     .. attribute:: not_after
 
-        :type: datetime.datetime
+        :type: :class:`datetime.datetime`
 
     A naïve datetime representing the end of the validity period for the
     certificate in UTC. This value is inclusive.