Fix vm.args.eex generated file when remote? is false (elixir-lang#1…

…3688)

before
```
-start_epmd false -erl_epmd_port 6789false
```

after
```
-start_epmd false -erl_epmd_port 6789
```

lib/mix/lib/mix/tasks/release.init.ex

@@ -53,7 +53,7 @@ defmodule Mix.Tasks.Release.Init do
 
     ## Enable deployment without epmd
     ## (requires changing both vm.args and remote.vm.args)
-    ##-start_epmd false -erl_epmd_port 6789#{remote? && " -dist_listen false"}
+    ##-start_epmd false -erl_epmd_port 6789#{if(remote?, do: " -dist_listen false")}
     """
 
   @doc false