chore(config): remove Reference tab from navigation

apps/docs/blume.config.ts

@@ -10,12 +10,4 @@ export default defineConfig({
   content: {
     root: "content",
   },
-  navigation: {
-    tabs: [
-      {
-        label: "Reference",
-        path: "/reference",
-      },
-    ],
-  },
 });