Fixed #36570 -- Removed unnecessary :py domain from documentation roles.

Signed-off-by: SaJH <wogur981208@gmail.com>

docs/topics/db/queries.txt

@@ -1060,7 +1060,7 @@ representation of the JSON scalar ``null`` is the same as SQL ``NULL``, i.e.
 ``None``. Therefore, it can be hard to distinguish between them.
 
 This only applies to ``None`` as the top-level value of the field. If ``None``
-is inside a :py:class:`list` or :py:class:`dict`, it will always be interpreted
+is inside a :class:`list` or :class:`dict`, it will always be interpreted
 as JSON ``null``.
 
 When querying, ``None`` value will always be interpreted as JSON ``null``. To

docs/topics/db/transactions.txt

@@ -113,7 +113,7 @@ Django provides a single API to control database transactions.
     durability and can be achieved by setting ``durable=True``. If the
     ``atomic`` block is nested within another it raises a ``RuntimeError``.
 
-    ``atomic`` is usable both as a :py:term:`decorator`::
+    ``atomic`` is usable both as a :term:`decorator`::
 
         from django.db import transaction
 
@@ -123,7 +123,7 @@ Django provides a single API to control database transactions.
             # This code executes inside a transaction.
             do_stuff()
 
-    and as a :py:term:`context manager`::
+    and as a :term:`context manager`::
 
         from django.db import transaction