Identify Cinder as the Block Storage Service

According to openstack/governance/projects.yaml, Cinder is the
OpenStack Block Storage service.  This patch changes the file
used to generate the specs.openstack.org index page and RSS feed
page to identify Cinder properly.  The change is only to displayed
text, URLs are not modified by this commit.

Change-Id: I2730dd82f1b6dd329a36e73150fec9c36470fc17
Partial-bug: #1841645

specs/specs.yaml

@@ -1,6 +1,8 @@
 projects:
   - name: Bare Metal Provisioning Specifications (ironic)
     repo: openstack/ironic-specs
+  - name: Block Storage Service Specifications (cinder)
+    repo: openstack/cinder-specs
   - name: Chef Cookbooks for the OpenStack Components Specifications (ChefOpenStack)
     repo: openstack/openstack-chef-specs
   - name: Compute Service Specifications (nova)
@@ -47,8 +49,6 @@ projects:
     repo: openstack/telemetry-specs
   - name: TripleO Specifications
     repo: openstack/tripleo-specs
-  - name: Volume Service Specifications (cinder)
-    repo: openstack/cinder-specs
 programs:
   - name: API SIG Guidelines
     repo: openstack/api-sig