Update Bcrypt.php

Fixed typo in exception message.
Update BcryptTest.php

Fixed typo in exception message.
Merge branch 'hotfix/4866'

Close #4866
Merge branch 'patch-1' of https://github.com/renecatharsis/zf2 into renecatharsis-patch-1
Merge branch 'renecatharsis-patch-1' into develop