fix: package main file

Author: farnabaz

package.json

@@ -2,10 +2,10 @@
   "name": "@alibaba-aero/vue-calendar",
   "version": "0.1.0",
   "description": "Vue Calendar",
-  "main": "dist/vuec.cjs.min.js",
-  "web": "dist/vuec.min.js",
-  "module": "dist/vuec.es.js",
-  "jsnext:main": "dist/vuec.es.js",
+  "main": "dist/vue-calendar.cjs.min.js",
+  "web": "dist/vue-calendar.min.js",
+  "module": "dist/vue-calendar.es.js",
+  "jsnext:main": "dist/vue-calendar.es.js",
   "license": "MIT",
   "scripts": {
     "dev": "nuxt dev demo",