Laravel路线问题与小写

I am trying to setup this route

http://test.localhost.com/doctor/updateschedule

My code in Routes file is

Route::resource('/doctor/updateschedule', 'Doctor\DoctorController@doctorSchedule');

But this does not work, It only works if I Use an Uppercase

http://test.localhost.com/Doctor/updateschedule

And in Routes,

Route::resource('/Doctor/updateschedule', 'Doctor\DoctorController@doctorSchedule');

There is nothing in the Controller's action, just an echo "Hello". it only works with an uppercase /Doctor/updateschedule

Can anyone tell me why this is happening and how can i make it work for lowercases?