bpo-44135: [docs] Fix inline markup (GH-28095)

miss-islington · Fidget-Spinner · web-flow · commit 8711b3d0ac89 · 2021-08-31T09:25:08.000-07:00
(cherry picked from commit 9a7ec2f) Co-authored-by: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
@@ -916,7 +916,7 @@ are always available.  They are listed here in alphabetical order.
    Return ``True`` if *class* is a subclass (direct, indirect, or :term:`virtual
    <abstract base class>`) of *classinfo*.  A
    class is considered a subclass of itself. *classinfo* may be a tuple of class
-   objects or a :ref:`types-union`, in which case return True if *class* is a
+   objects or a :ref:`types-union`, in which case return ``True`` if *class* is a
    subclass of any entry in *classinfo*.  In any other case, a :exc:`TypeError`
    exception is raised.
 
