fix: update typedefs to match with html-minifier-terser

Author: ianberinger

package.json

@@ -28,7 +28,7 @@
     ]
   },
   "devDependencies": {
-    "@types/html-minifier": "3.5.3",
+    "@types/html-minifier-terser": "5.0.0",
     "@types/loader-utils": "1.1.3",
     "@types/node": "11.13.9",
     "@types/tapable": "1.0.4",

typings.d.ts

@@ -1,6 +1,6 @@
 import { AsyncSeriesWaterfallHook } from "tapable";
 import { Compiler, compilation } from 'webpack';
-import { Options as HtmlMinifierOptions } from "html-minifier";
+import { Options as HtmlMinifierOptions } from "html-minifier-terser";
 
 export = HtmlWebpackPlugin;