Update library/unittest.mock.po

Co-authored-by: Wei-Hsiang (Matt) Wang <mattwang44@gmail.com>

Author: ken71301

library/unittest.mock.po

@@ -844,7 +844,7 @@ msgid ""
 "class:`PropertyMock` to a mock object. Instead you can attach it to the mock "
 "type object::"
 msgstr ""
-"由於 mock 屬性的存儲方式，你無法直接將 :class:`PropertyMock` 附加到 mock 物"
+"由於 mock 屬性的儲存方式，你無法直接將 :class:`PropertyMock` 附加到 mock 物"
 "件。但是你可以將其附加到 mock 型別的對象：　::"
 
 #: ../../library/unittest.mock.rst:862