[lldb] Update Xfail window (llvm#140599)

Author: oontvoo

lldb/test/Shell/Commands/list-header.test

@@ -1,6 +1,6 @@
 ## Does not work on windows (yet?) PDB debug-info likely does something wrong
 ## with the header files.
-# XFAIL: system-windows
+# XFAIL: target-windows
 
 ## Test that `list header.h:<line>` works correctly when header is available.
 ##