Merge pull request #164 from dynamsoft-docs/preview

update version

Author: Dynamsoft-Jerson

_data/product_version.yml

@@ -1,10 +1,19 @@
+useGroupedVersion: true
+
 version_info_list:
-  - latest version
-  - 2.2.20
-  - 2.2.11
-  - 2.2.10
-  - 2.2.0
-  - 2.0.0
-  - 1.2.1
-  - 1.2
-  - 1.0
+  - value: latest version
+  - value: 3.x
+    child: 
+      - 3.0.0
+  - value: 2.x
+    child:
+      - 2.2.20
+      - 2.2.11
+      - 2.2.10
+      - 2.2.0
+      - 2.0.0
+  - value: 1.x
+    child:
+      - 1.2.1
+      - 1.2
+      - 1.0