Fix mock_open docstring to use readline (#11176)
diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index 38189c9..3a22a48 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -2376,7 +2376,7 @@
default) then a `MagicMock` will be created for you, with the API limited
to methods or attributes available on standard file handles.
- `read_data` is a string for the `read` methoddline`, and `readlines` of the
+ `read_data` is a string for the `read`, `readline` and `readlines` of the
file handle to return. This is an empty string by default.
"""
def _readlines_side_effect(*args, **kwargs):