fix-proselint (#5074)

ale_linters/fountain/proselint.vim

@@ -1,9 +1,11 @@
 " Author: Jansen Mitchell https://github.com/JansenMitchell
 " Description: proselint for Fountain files
 
+call ale#Set('proselint_executable', 'proselint')
+
 call ale#linter#Define('fountain', {
-\    'name': 'proselint',
-\    'executable': 'proselint',
-\    'command': 'proselint %t',
-\    'callback': 'ale#handlers#unix#HandleAsWarning',
+\   'name': 'proselint',
+\   'executable': function('ale#proselint#GetExecutable'),
+\   'command': function('ale#proselint#GetCommandWithVersionCheck'),
+\   'callback': 'ale#handlers#unix#HandleAsWarning',
 \})