use correct equivalent of xdg-open on MS Windows

Author: Konfekt

plugin/devdocs.vim

@@ -15,16 +15,16 @@ set cpo&vim
 
 " What command to use
 function! s:Cmd() abort
+" Windows (and WSL)
+if executable('cmd.exe')
+return "cmd.exe /c start /b"
 " Linux/BSD
-if executable("xdg-open")
+elseif executable("xdg-open")
 return "xdg-open"
-endif
 " MacOS
-if executable("open")
+elseif executable("open")
 return "open"
 endif
-" Windows
-return "explorer"
 endfunction
 
 " Build the URL stub