bug in after edition

Hello,

when I edit and save the html with the addon, my result is prefixed with 

<p>
  Plain Bash C++ C# CSS Diff HTML/XML Java JavaScript Markdown PHP Python Ruby SQL
</p>

environment : 
quill": "2.0.3",
    "quill-html-edit-button": "3.0.0",
    "quill-resize-module": "1.2.4",
    "@highlightjs/cdn-assets": "11.10.0"