wpsoffice: unfree-redistributable not in lib.licenses

The attribute is called unfreeRedistributable.

pkgs/applications/office/wpsoffice/default.nix

···
     homepage = http://wps-community.org/;
     platforms = [ "x86_64-linux" ];
     # Binary for i686 is also available if someone can package it
-    license = lib.licenses.unfree-redistributable;
+    license = lib.licenses.unfreeRedistributable;
   };
 
   libPath = stdenv.lib.makeLibraryPath [