add h4, 5, 6

packages/app/src/services/renderer/renderer.tsx

@@ -197,6 +197,9 @@ export const generateViewOptions = (
     components.h1 = Header;
     components.h2 = Header;
     components.h3 = Header;
+    components.h4 = Header;
+    components.h5 = Header;
+    components.h6 = Header;
     components.lsx = Lsx;
     components.drawio = DrawioViewerWithEditButton;
     components.table = TableWithEditButton;