laravel5 Route::resource Generate wrong route

I am using Laravel 5.7 Route::resource.

I has saw https://laravel.com/docs/5.7/controllers when I use

Route::resource('koumokus', 'KoumokuController');

should be Generate as bleow

GET admin/koumokus/{koumoku}        show
GET admin/koumokus/{koumoku}/edit   edit

However, It is Generate

GET admin/koumokus/{koumokus}       show
GET admin/koumokus/{koumokus}/edit  edit

on the other hand,

Route::resource('funruis', 'FunruiController');

is normally to gent

GET admin/funruis/{funrui}      show
GET admin/funruis/{funrui}/edit edit

How can I fixed it?

via Chebli Mohamed