decouple from CORD guide

Change-Id: I9187b72a95721b2620f65ccf4b581a11d8de8125
diff --git a/docs/book.json b/docs/book.json
index 1312ebb..b9ce15e 100644
--- a/docs/book.json
+++ b/docs/book.json
@@ -9,7 +9,13 @@
   },
   "plugins": [
     "anchorjs",
+    "custom-favicon",
     "smart-nav-collapse",
     "versions-select"
-  ]
+  ],
+  "pluginsConfig": {
+    "favicon": "static/xos.ico"
+  }
 }
+
+