Markup nit: Command line options should be marked with \programopt.

Doc/api/api.tex

@@ -975,8 +975,8 @@ type \ctype{PyObject*}; they are all class objects.  Their names are
 of \cdata{PyExc_Warning}.
 
 For information about warning control, see the documentation for the
-\module{warnings} module and the \samp{-W} option in the command line
-documentation.  There is no C API for warning control.
+\module{warnings} module and the \programopt{-W} option in the command
+line documentation.  There is no C API for warning control.
 \end{cfuncdesc}
 
 \begin{cfuncdesc}{int}{PyErr_CheckSignals}{}