fix filename of a test file in writerperfect

Was broken in d077b19a.

Change-Id: I5f0e0ca7c60f0f09381ee7eebd7d49d5533e07af
Reviewed-on: https://gerrit.libreoffice.org/71145
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

writerperfect/qa/unit/WpftDrawFilterTest.cxx

@@ -32,7 +32,7 @@ void WpftDrawFilterTest::test()
 {
     const writerperfect::test::WpftOptionalMap_t aMWAWOptional{
         { "ClarisDraw.hqx", REQUIRE_MWAW_VERSION(0, 3, 5) },
-        { "CorelPainter_3_win", REQUIRE_MWAW_VERSION(0, 3, 15) },
+        { "CorelPainter_3_win.rif", REQUIRE_MWAW_VERSION(0, 3, 15) },
         { "CorelPainter_10", REQUIRE_MWAW_VERSION(0, 3, 15) },
         { "CricketDraw_1.0.hqx", REQUIRE_MWAW_VERSION(0, 3, 8) },
         { "CricketDraw_1.1.hqx", REQUIRE_MWAW_VERSION(0, 3, 8) },