Optimize the link address

Use https instead of http to ensure the safety

Change-Id: I4b8be0de1331450753508517558acdcca66e94c5
diff --git a/README.rst b/README.rst
index ad8add0..51940d7 100644
--- a/README.rst
+++ b/README.rst
@@ -11,9 +11,9 @@
 custom roles.
 
 * Free software: Apache license
-* Documentation: http://docs.openstack.org/developer/patrole
-* Source: http://git.openstack.org/cgit/openstack/patrole
-* Bugs: http://bugs.launchpad.net/patrole
+* Documentation: https://docs.openstack.org/developer/patrole
+* Source: https://git.openstack.org/cgit/openstack/patrole
+* Bugs: https://bugs.launchpad.net/patrole
 
 Features
 ========