fix: fix adding mark only with insertContent(), fix #264

packages/core/src/utilities/elementFromString.ts

@@ -1,7 +1,3 @@
 export default function elementFromString(value: string): HTMLElement {
-  const htmlString = `<div>${value}</div>`
-  const parser = new window.DOMParser()
-  const element = parser.parseFromString(htmlString, 'text/html').body
-
-  return element
+  return new window.DOMParser().parseFromString(value, 'text/html').body
 }