Fix warning about missing -M

Author: SevereOverfl0w

autoload/jack_in.vim

@@ -66,7 +66,7 @@ endfunction
 
 function! jack_in#clj_cmd(...)
   let l:clj_string = 'clj'
-  let l:main_fn = '-m nrepl.cmdline'
+  let l:main_fn = '-M -m nrepl.cmdline'
   let l:interactive = '--interactive'
 
   let l:deps = '-Sdeps ''{:deps {nrepl/nrepl {:mvn/version "0.9.0"} '