update package

Author: Allenice

template/package.json

@@ -44,7 +44,7 @@
     "file-loader": "^0.11.2",
     "friendly-errors-webpack-plugin": "^1.6.1",
     "fs-extra": "^3.0.1",
-    "html-webpack-plugin": "^2.29.0",
+    "html-webpack-plugin": "^2.30.1",
     "http-proxy-middleware": "^0.17.4",
     "node-sass": "^4.5.3",
     "opn": "^5.1.0",