Fixed typo in sphinx.yml
diff --git a/keystone/meta/sphinx.yml b/keystone/meta/sphinx.yml
index 82000a1..e8356b2 100644
--- a/keystone/meta/sphinx.yml
+++ b/keystone/meta/sphinx.yml
@@ -13,7 +13,7 @@
       name: server
       param:
         token_engine:
-          value: {{ server.tokens.engine x}}
+          value: {{ server.tokens.engine }}
   {%- endif %}
   {%- if pillar.keystone.control is defined %}
     control: