Purge trailing whitespace in 5to6.pod

lib/Language/5to6.pod

@@ -131,7 +131,7 @@ allowed:
     # Perl 5
     my @books = $xml->parse_file($file)          # some comment
                     ->findnodes("/library/book");
-        
+
     # Perl 6
     my @books = $xml.parse-file($file)\          # some comment
                     .findnodes("/library/book");
@@ -269,11 +269,11 @@ C<&foo;> I<and> C<goto &foo;> I<for re-using the caller's argument list / replac
 
     sub foo { say "before"; &bar;     say "after" } # Perl 5
     sub foo { say "before"; bar(|@_); say "after" } # Perl 6 - have to be explicit
-    
+
     # TODO: Suggest .callsame once it has been implemented in Rakudo.
 
     sub foo { say "before"; goto &bar } # Perl 5
-    
+
     # TODO: Suggest .nextsame and .nextwith once they've been implemented in Rakudo.
 =end item