* fix: update method used from findAndModify to findOneAndUpdate
Updating the method used at implementation-of-social-authentication-iii, both for english and chinese
* fix: changed text findAndModify to findOneAndUpdate
* fix: removed chinese file
* Update curriculum/challenges/english/06-quality-assurance/advanced-node-and-express/implementation-of-social-authentication-iii.english.md
Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>