update docs

Signed-off-by: AnthonyTsu1984 <115786031+AnthonyTsu1984@users.noreply.github.com>

Author: AnthonyTsu1984

site/en/menuStructure/en.json

@@ -55,10 +55,16 @@
         "order": 0,
         "children": []
       },
+      {
+        "label": "Data Model Design for Search",
+        "id": "schema-hands-on.md",
+        "order": 1,
+        "children": []
+      },
       {
         "label": "Install Milvus",
         "id": "install_milvus",
-        "order": 1,
+        "order": 2,
         "isMenu": true,
         "children": [
           {
@@ -159,12 +165,6 @@
           }
         ]
       },
-      {
-        "label": "Data Model Design for Search",
-        "id": "schema-hands-on.md",
-        "order": 2,
-        "children": []
-      },
       {
         "label": "Install SDKs",
         "id": "install_sdks",