Fix example ip (elixir-lang#967)

ceriath · josevalim · commit 4f824e84edaa · 2017-03-20T15:26:35.000+01:00
Nothing important, most people will see it, still should be fixed to default localhost ip
diff --git a/getting-started/module-attributes.markdown b/getting-started/module-attributes.markdown
@@ -83,7 +83,7 @@ Elixir developers will often use module attributes as constants:
 
 ```elixir
 defmodule MyServer do
-  @initial_state %{host: "147.0.0.1", port: 3456}
+  @initial_state %{host: "127.0.0.1", port: 3456}
   IO.inspect @initial_state
 end
 ```
