fix prepublish script

Author: yyx990803

package.json

@@ -14,7 +14,7 @@
     "test": "npm run lint && mocha --compilers js:babel-register",
     "dev": "cd example && webpack --watch",
     "build": "webpack -p index.js dist/babel-plugin-transform-vue-jsx.min.js --target=web --output-library=babel-plugin-transform-vue-jsx --output-library-target=umd --module-bind 'js=babel-loader'",
-    "prepubish": "npm run build"
+    "prepublish": "npm run build"
   },
   "repository": {
     "type": "git",