fix version code

dev-meta.json

@@ -1,4 +1,4 @@
 {
-  "version": "V3.1.0",
+  "version": "3.1.0",
   "url": "https://git.tclyun.cn/tcl/danbay-smartproject-app-update/raw/main/app-release-dev.apk"
-}
+}