Fix incorrect schema validator (#1790)
Fix incorrect schema validator (#1790)

* Use right length in Page title validator
CTFd/CTFd,CTFd/CTFd,isislab/CTFd,ajvpot/CTFd,isislab/CTFd,ajvpot/CTFd,isislab/CTFd,CTFd/CTFd,CTFd/CTFd,ajvpot/CTFd,ajvpot/CTFd,isislab/CTFd