[skip CI] Translate dde-launchpad.ts in pl

95% of minimum 50% translated source file: 'dde-launchpad.ts'
on 'pl'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/dde-launchpad_pl.ts

@@ -87,7 +87,7 @@
     <message>
         <location filename="../qml/windowed/BottomBar.qml" line="103"/>
         <source>Full-screen Mode</source>
-        <translation type="unfinished"/>
+        <translation>Tryb pełnoekranowy</translation>
     </message>
 </context>
 <context>