updating imports to not error out

Author: Formatted

packages/lit-dev-content/site/docs/v2/tools/production.md

@@ -68,12 +68,13 @@ npm i --save-dev rollup \
 `rollup.config.js:`
 ```js
 // Import rollup plugins
-import html from '@web/rollup-plugin-html';
+import { rollupPluginHTML as html } from '@web/rollup-plugin-html';
 import {copy} from '@web/rollup-plugin-copy';
 import resolve from '@rollup/plugin-node-resolve';
-import {terser} from '@rollup/plugin-terser';
-import minifyHTML from 'rollup-plugin-minify-html-literals';
-import summary from 'rollup-plugin-summary';
+import terser from '@rollup/plugin-terser';
+import {summary] from 'rollup-plugin-summary';
+import pkgMinifyHTML from 'rollup-plugin-minify-html-literals';
+const minifyHTML = pkgMinifyHTML.default;
 
 export default {
   plugins: [