bpo-35765: Clarify references to "object x" in the JSON tutorial (GH-22411) (GH-26218)

(cherry picked from commit 4fdcc39f711e1b586a94e2c5088fdd7e78fd9f58)

Co-authored-by: Zackery Spytz <zspytz@gmail.com>
diff --git a/Doc/tutorial/inputoutput.rst b/Doc/tutorial/inputoutput.rst
index 4e27cff..7f83c4d 100644
--- a/Doc/tutorial/inputoutput.rst
+++ b/Doc/tutorial/inputoutput.rst
@@ -480,7 +480,8 @@
 simple line of code::
 
    >>> import json
-   >>> json.dumps([1, 'simple', 'list'])
+   >>> x = [1, 'simple', 'list']
+   >>> json.dumps(x)
    '[1, "simple", "list"]'
 
 Another variant of the :func:`~json.dumps` function, called :func:`~json.dump`,