add docs on menu

Author: dks333

navigation.mdx

@@ -140,6 +140,43 @@ documentation.
 }
 ```
 
+### Menu 
+
+Menu is a special type of tab that is used to display a dropdown menu. It helps users navigate to different sections faster.
+
+```json
+"navigation": {
+  "tabs": [
+    {
+      "tab": "API References",
+      "icon": "square-terminal",
+      "menu": [
+        {
+          "item": "API References",
+          "icon": "rocket",
+          "pages": [
+            "api-reference/get",
+            "api-reference/post",
+            "api-reference/delete"
+          ]
+        },
+        {
+          "item": "SDKs",
+          "icon": "code",
+          "description": "SDKs are used to interact with the API.",
+          "pages": [
+            "sdk/fetch",
+            "sdk/create",
+            "sdk/delete",
+          ]
+        }
+      ]
+    }
+  ]
+}
+```
+
+
 ---
 
 ## Anchors