work on docx patcher

demo/85-template-document.ts

@@ -1,8 +1,10 @@
 // Simple template example
 // Import from 'docx' rather than '../build' if you install from npm
 import * as fs from "fs";
-import { fromDocx } from "../build";
+import { Paragraph, patchDocument, TextRun } from "../build";
 
-fromDocx(fs.readFileSync("demo/template.docx")).then((doc) => {
+patchDocument(fs.readFileSync("demo/assets/simple-template.docx"), {
+    children: [new Paragraph("ff"), new TextRun("fgf")],
+}).then((doc) => {
     fs.writeFileSync("My Document.docx", doc);
 });