script/gen_state_diagram.py: s/python/python3/

python does not necessarily on a modern distro which has only python3,
so use python3 instead.

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/doc/scripts/gen_state_diagram.py b/doc/scripts/gen_state_diagram.py
index 90cfb9282dcc111866f3df4aafbb89a39927a57b..cb968d49d4a379ce1c14a3a678315b35299c7c1e 100755 (executable)
--- a/doc/scripts/gen_state_diagram.py
+++ b/doc/scripts/gen_state_diagram.py
@@ -1,5 +1,4 @@
-#!/usr/bin/env python
-from __future__ import print_function
+#!/usr/bin/python3
 
 import re
 import sys