[3.11] gh-101100: Fix class reference in library/test.rst (GH-114769) (GH-114793)

The text clearly seems to be referencing `TestFuncAcceptsSequencesMixin`,
for which no target is available. Name the class properly and suppress
the dangling reference.
(cherry picked from commit 7a93db44257c0404dc407ff2ddc997f4bb8890ed)

Co-authored-by: Skip Montanaro <skip.montanaro@gmail.com>

diff --git a/Doc/library/test.rst b/Doc/library/test.rst
index a0db28a718e0007c01476befecc25bad8c9b180a..c942685310f78a20266ff8848663815fb0482324 100644 (file)
--- a/Doc/library/test.rst
+++ b/Doc/library/test.rst
@@ -143,7 +143,7 @@ guidelines to be followed:
          arg = (1, 2, 3)
 
   When using this pattern, remember that all classes that inherit from
-  :class:`unittest.TestCase` are run as tests.  The :class:`Mixin` class in the example above
+  :class:`unittest.TestCase` are run as tests.  The :class:`!TestFuncAcceptsSequencesMixin` class in the example above
   does not have any data and so can't be run by itself, thus it does not
   inherit from :class:`unittest.TestCase`.