fix fime name

Author: tangjinzhou

build.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 rm -rf dist
 mkdir dist
-./node_modules/.bin/webpack --config webpack.prod.config.js
+./node_modules/.bin/webpack --config webpack.site.config.js
 cp dist/index.html index.html