Add examples for regex flags (#1716)
Add examples for regex flags (#1716)

* Adds examples for regex flags in the flag creation form
CTFd/CTFd,isislab/CTFd,isislab/CTFd,CTFd/CTFd,ajvpot/CTFd,ajvpot/CTFd,CTFd/CTFd,isislab/CTFd,isislab/CTFd,CTFd/CTFd,ajvpot/CTFd,ajvpot/CTFd