Rename wxCmpNaturalGeneric() test to its actual name

The name of the test was still using the original function name, update
it to the actually used name.

No real changes.

tests/arrays/arrays.cpp

@@ -769,7 +769,7 @@ TEST_CASE("wxDynArray::IndexFromEnd", "[dynarray]")
 }
 
 
-TEST_CASE("wxNaturalStringComparisonGeneric()", "[wxString][compare]")
+TEST_CASE("wxCmpNaturalGeneric", "[wxString][compare]")
 {
     // simple string comparison
     CHECK(wxCmpNaturalGeneric("a", "a") == 0);