Fix typo in unittest.mock docs
diff --git a/Doc/library/unittest.mock.rst b/Doc/library/unittest.mock.rst
index 8bb37dc..df03164 100644
--- a/Doc/library/unittest.mock.rst
+++ b/Doc/library/unittest.mock.rst
@@ -1714,7 +1714,7 @@
`call` is a helper object for making simpler assertions, for comparing
with :attr:`~Mock.call_args`, :attr:`~Mock.call_args_list`,
- :attr:`~Mock.mock_calls` and:attr: `~Mock.method_calls`. `call` can also be
+ :attr:`~Mock.mock_calls` and :attr: `~Mock.method_calls`. `call` can also be
used with :meth:`~Mock.assert_has_calls`.
>>> m = MagicMock(return_value=None)