DOCS: Fix old API BitBucket URL being referenced in README
DOCS: Fix old API BitBucket URL being referenced in README

doubtfire-lms/doubtfire-web,doubtfire-lms/doubtfire-web,alexcu/doubtfire-web,doubtfire-lms/doubtfire-web,final-year-project/doubtfire-web,final-year-project/doubtfire-web,doubtfire-lms/doubtfire-web,alexcu/doubtfire-web