Remove dependency on lib.dom.d.ts (#204)

* Remove dependency on lib.dom.d.ts

* Remove domNode option

types/index.d.ts

@@ -1,5 +1,3 @@
-/// <reference lib="dom" />
-
 import {
   FastifyPluginCallback,
   FastifyReply,
@@ -166,15 +164,10 @@ declare namespace fastifySwaggerUi {
     configUrl?: string | undefined;
 
     /**
-     * REQUIRED if domNode is not provided. The ID of a DOM element inside which SwaggerUI will put its user interface.
+     * The ID of a DOM element inside which SwaggerUI will put its user interface.
      */
     dom_id?: string | undefined;
 
-    /**
-     *  REQUIRED if dom_id is not provided. The HTML DOM element inside which SwaggerUI will put its user interface. Overrides dom_id.
-     */
-    domNode?: HTMLElement | null | undefined;
-
     /**
      * A JavaScript object describing the OpenAPI definition. When used, the url parameter will not be parsed. This is useful for testing manually-generated definitions without hosting them
      */