docs: add demo video

zxch3n · web-flow · commit 92cc18eb829f · 2024-06-06T18:53:08.000+08:00
diff --git a/README.md b/README.md
@@ -33,4 +33,7 @@ const editor = new EditorView(editorDom, {
 });
 ```
 
+https://github.com/loro-dev/prosemirror/assets/18425020/d0f01760-b76c-43b5-b7f7-b0b224130d9d
+
+
 

-Original file line number
+Diff line change
 });
 ```
 +https://github.com/loro-dev/prosemirror/assets/18425020/d0f01760-b76c-43b5-b7f7-b0b224130d9d
++
++