Update sidebars.js

docs/sidebars.js

@@ -21,10 +21,24 @@ const sidebars = {
   selfhostSidebar: [{type: 'autogenerated', dirName: 'self-host'}],
   contributeSidebar: [{type: 'autogenerated', dirName: 'contribute'}],
   // apiSidebar: apiSidebar,
- 
-  // Separate sidebars per API version
-  apiV1Sidebar: apiV1Sidebar,
-  apiV11Sidebar: apiV11Sidebar,
+  // Single API sidebar containing two top-level categories
+  apiSidebar: [
+    {
+      type: 'category',
+      label: 'v1',
+      // Optional: clicking the category label goes to a “generated index”
+      link: { type: 'generated-index', title: 'OpenSign API v1', slug: '/api/v1' },
+      collapsed: false,
+      items: apiV1Sidebar,
+    },
+    {
+      type: 'category',
+      label: 'v1.1',
+      link: { type: 'generated-index', title: 'OpenSign API v1.1', slug: '/api/v1.1' },
+      collapsed: false,
+      items: apiV11Sidebar,
+    },
+  ],
  
   // But you can create a sidebar manually
   /*