Fix typo in I18n Guide [ci skip]

Erol · Erol · commit 36176c51d363 · 2017-02-17T16:38:38.000+08:00
diff --git a/guides/source/i18n.md b/guides/source/i18n.md
@@ -417,7 +417,7 @@ If your translations are stored in YAML files, certain keys must be escaped. The
 Examples:
 
 ```erb
-# confing/locales/en.yml
+# config/locales/en.yml
 en:
   success:
     'true':  'True!'
