Update lib/elixir/lib/exception.ex

Author: davydog187

lib/elixir/lib/exception.ex

@@ -346,7 +346,7 @@ defmodule Exception do
   defp rewrite_arg(arg) do
     Macro.prewalk(arg, fn
       {:%{}, meta, [__struct__: Range, first: first, last: last, step: step]} ->
-        {:"..//", meta, [first, last, step]}
+        {:..//, meta, [first, last, step]}
 
       other ->
         other