Issue #24540: fix typo in json.dumps docstring

Lib/json/__init__.py

@@ -184,7 +184,7 @@ def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True,
         default=None, sort_keys=False, **kw):
     """Serialize ``obj`` to a JSON formatted ``str``.
 
-    If ``skipkeys`` is false then ``dict`` keys that are not basic types
+    If ``skipkeys`` is true then ``dict`` keys that are not basic types
     (``str``, ``int``, ``float``, ``bool``, ``None``) will be skipped
     instead of raising a ``TypeError``.