update version 4.2.0
diff --git a/docs-site/website/versions.json b/docs-site/website/versions.json
index ce20d12..a966191 100644
--- a/docs-site/website/versions.json
+++ b/docs-site/website/versions.json
@@ -12,5 +12,5 @@
   "4.1.0_Chinese",
   "4.1.0_Viet",
   "4.2.0_Chinese",
-  "4.2.0_Viet",
+  "4.2.0_Viet"
 ]