Include rel=”noopener” on links to improve security

I would like to include in the templates/default.md file (compatible with HTML) the tag rel = "noopener noreferrer" inside the links . To do this, it will also be necessary to modify the links on "src/snapshots/readme.spec.js.snap" file, as I found testing in a local environment.

This modification increases the security of this generator's links. The vulnerability has been described in detail here: https://www.jitbit.com/alexblog/256-targetblank---the-most-underestimated-vulnerability-ever/

I believe that, at first, you may think that this would only represent a risk for the github itself. However, I realized that this could get worse because I am developing a small React app as a bootcamp exercise, and this app uses the Github API to receive information from profiles and repositories. When capturing this information, it saves it in a database and publishes it. In other words: the url of our sites is vulnerable.