That is something Q2A is adding. It doesn't matter what editor plugin you are using. You can use my fork of the Q2A Ultimate SEO plugin to whitelist domains and make them "dofollow".
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.
April 20, 2021: Q2A 1.8.6 released!