Fix error in header line used by dotest, use %target instead of %os

git-svn-id: trunk@34906 -

tests/webtbs/tw30348.pp

@@ -1,4 +1,4 @@
-{ %os=win32,win64 }
+{ %target=win32,win64 }
 program project1;
 
 {$mode objfpc}{$H+}