revert command completion mode from "shellcmd" back to "file" because…

… of a regression that '%' will not be substituted when using "shellcmd": see #264

plugin/asyncrun.vim

@@ -3,7 +3,7 @@
 " Maintainer: skywind3000 (at) gmail.com, 2016-2022
 " Homepage: https://github.com/skywind3000/asyncrun.vim
 "
-" Last Modified: 2022/11/02 18:41
+" Last Modified: 2022/11/03 11:05
 "
 " Run shell command in background and output to quickfix:
 "     :AsyncRun[!] [options] {cmd} ...
@@ -2107,7 +2107,7 @@ endfunc
 " asyncrun - version
 "----------------------------------------------------------------------
 function! asyncrun#version()
-	return '2.10.8'
+	return '2.10.9'
 endfunc
 
 
@@ -2131,7 +2131,7 @@ endfunc
 "----------------------------------------------------------------------
 " Commands
 "----------------------------------------------------------------------
-command! -bang -nargs=+ -range=0 -complete=shellcmd AsyncRun
+command! -bang -nargs=+ -range=0 -complete=file AsyncRun
 		\ call asyncrun#run('<bang>', '', <q-args>, <count>, <line1>, <line2>)
 
 command! -bar -bang -nargs=0 AsyncStop call asyncrun#stop('<bang>')