Use const markup instead of a misleading string literal
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index c429c85..26fa97e 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -1077,7 +1077,7 @@
If *capture* is ``True``, warnings issued by the :mod:`warnings` module will
be redirected to the logging system. Specifically, a warning will be
formatted using :func:`warnings.formatwarning` and the resulting string
- logged to a logger named ``'py.warnings'`` with a severity of ``'WARNING'``.
+ logged to a logger named ``'py.warnings'`` with a severity of :const:`WARNING`.
If *capture* is ``False``, the redirection of warnings to the logging system
will stop, and warnings will be redirected to their original destinations