Correct python option render (#1370)

Old content will render to `-python=2.5` This patch correct it to `--python=2.5`
pypa · Jun 23, 2019 · d997faa · d997faa
1 parent 2883908
commit d997faa
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/reference.rst b/docs/reference.rst
@@ -40,7 +40,7 @@ Options
 .. option:: -p PYTHON_EXE, --python=PYTHON_EXE
 
    The Python interpreter to use, e.g.,
-   --python=python2.5 will use the python2.5 interpreter
+   ``--python=python2.5`` will use the python2.5 interpreter
    to create the new environment.  The default is the
    interpreter that virtualenv was installed with
    (like ``/usr/bin/python``)