New translations

resources/lang/pl_PL/config.php

@@ -10,12 +10,12 @@
  */
 
 return [
-    'locale'          => 'en, English, en_US, en_US.utf8',
+    'locale'          => 'pl, Polski, pl_PL, pl_PL.utf8',
     'month'           => '%B %Y',
     'month_and_day'   => '%B %e, %Y',
     'date_time'       => '%B %e, %Y, @ %T',
     'specific_day'    => '%e %B %Y',
-    'week_in_year'    => 'Week %W, %Y',
+    'week_in_year'    => 'Tydzień %W, %Y',
     'quarter_of_year' => '%B %Y',
     'year'            => '%Y',
     'half_year'       => '%B %Y',