translations: update Polish

Change-Id: I1ff11f92c08b4d1c75e6127c39b1552c7e94df80

translations.html

@@ -53,17 +53,17 @@ table#translations td,th {
     <td>Russian</td>
     <td><a href='http://www.williamspublishing.com/Books/978-5-8459-2051-5.html''>Язык программирования Go</a></td>
     <td><a href='http://www.williamspublishing.com/Books/978-5-8459-2051-5.html'/>Williams Publishing</a> (Russia)</td>
-    <td>2016</td>
+    <td>April 2016</td>
     <td>&nbsp;</td>
     <td>9785845920515</td>
   </tr>
   <tr>
     <td>Polish</td>
-    <td></td>
+    <td><a href='http://helion.pl/ksiazki/jezyk-go-poznaj-i-programuj-alan-a-a-donovan-brian-w-kernighan,jgopop.htm'>Język Go Poznaj i programuj</a></td>
     <td><a href='http://helion.pl/'>Helion</a> (Poland)</td>
-    <td>2016</td>
-    <td></td>
-    <td></td>
+    <td>July 2016</td>
+    <td>Lech Lachowski</td>
+    <td>9788328324671</td>
   </tr>
   <tr>
     <td>Japanese</td>