Fix a few misuses of :option: I missed in r86521.
Extract of the commit message:
Fix usage of :option: in the docs (#9312).
:option: is used to create a link to an option of python, not to mark
up any instance of any arbitrary command-line option. These were
changed to ````.
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index d1f47eb..16a753c 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -501,7 +501,7 @@
~~~~~~~~~~~~~~~~~~~~
Setting these variables only has an effect in a debug build of Python, that is,
-if Python was configured with the :option:`--with-pydebug` build option.
+if Python was configured with the ``--with-pydebug`` build option.
.. envvar:: PYTHONTHREADDEBUG