Correct a typo in the Unittest documentation (GH-10397)

miss-islington · geryogam · web-flow · commit aa4f9a23932f · 2018-11-09T11:50:52.000-08:00
Co-Authored-By: maggyero <gery.ogam@gmail.com> (cherry picked from commit 009b2f0) Co-authored-by: Géry Ogam <gery.ogam@gmail.com>
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
@@ -588,7 +588,7 @@ Distinguishing test iterations using subtests
 
 .. versionadded:: 3.4
 
-When some of your tests differ only by a some very small differences, for
+When there are very small differences among your tests, for
 instance some parameters, unittest allows you to distinguish them inside
 the body of a test method using the :meth:`~TestCase.subTest` context manager.
 
