Add constants for Italian

Author: troosan

src/PhpWord/Style/Language.php

@@ -46,7 +46,7 @@ final class Language extends AbstractStyle
 
     const HE_IL = 'he-IL';
     const HE_IL_ID = 1037;
-    
+
     const IT_IT = 'it-IT';
     const IT_IT_ID = 1040;