Fix README for Duplicate implicit target name: "storyboard"

While releasing new version in pypi, it perform the
validation on the package and give error if there is any
formatting issue.

warning: check: Duplicate implicit target name: "storyboard".
error: Please correct your package.

- http://logs.openstack.org/68/645868/1/check/openstack-tox-validate/9d9219e/job-output.txt.gz#_2019-03-22_20_15_40_332673

This commit fixes the format error to release the patrole.

Change-Id: Ie840743b61bab5c833f554bb40b6a162e790a29f
diff --git a/README.rst b/README.rst
index 031a74e..6115702 100644
--- a/README.rst
+++ b/README.rst
@@ -249,4 +249,4 @@
 Storyboard
 ----------
 Bugs and enhancements are tracked via Patrole's
-`Storyboard <https://storyboard.openstack.org/#!/project/openstack/patrole>`_ page.
+`Storyboard Page <https://storyboard.openstack.org/#!/project/openstack/patrole>`_.