Fixed typos

docs/guide/i18n.md

@@ -40,7 +40,7 @@ Basic message translation
 -------------------------
 
 Yii basic message translation in its basic variant works without additional PHP extension. What it does is finding a
-translation of the message from source language into targer language. Message itself is specified as the first
+translation of the message from source language into target language. Message itself is specified as the second
 `\Yii::t` method parameter:
 
 ```php