docs: adding disableHostCheck default value (#1373)

Author: centerorbit

Diff for: docs/config.md

@@ -69,6 +69,7 @@ module.exports = {
   // configure webpack-dev-server behavior
   devServer: {
     open: process.platform === 'darwin',
+    disableHostCheck: false,
     host: '0.0.0.0',
     port: 8080,
     https: false,