Fix configuration link syntax error
The configuration guide link has syntax problem in README.rst,
and the click the link will lead to page 404.
Fix the syntax problem
Change-Id: I47a1641a6898930dca508cdac98b1b43c05dc446
diff --git a/README.rst b/README.rst
index dfa68b9..b4240bd 100644
--- a/README.rst
+++ b/README.rst
@@ -92,5 +92,5 @@
`local.conf`. It is likely that you will need to provide and modify
this file if you want anything other than the most basic setup. Start
by reading the `configuration guide
-<https://docs.openstack.org/developer/devstack/configuration.html>_`
+<https://docs.openstack.org/developer/devstack/configuration.html>`_
for details of the configuration file and the many available options.