directory separator to support windows path on ask hidden executable file

                                                   
|Q             |A                                 |
                                                   
|Bug Fix?:     |y                                 |
|New Feature?: |n                                 |
|BC Breaks?:   |n                                 |
|Deprecations?:|n                                 |
|Tests Pass?:  |y                                 |
|Fixed Tickets:|gush ticket on phar askhiddeninput|
|License:      |MIT                               |
|Doc PR:       |                                  |
                                                   

i added directory separator syntax because i think is causing the problem