test/py: test_fs: Correct the test case name

Use test_fstypes as the name instead of test_dm_compact.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

test/py/tests/test_fs/test_fs_cmd.py

@@ -6,7 +6,7 @@ import pytest
 
 @pytest.mark.boardspec('sandbox')
 @pytest.mark.buildconfigspec('cmd_fs_generic')
-def test_dm_compat(u_boot_console):
+def test_fstypes(u_boot_console):
     """Test that `fstypes` prints a result which includes `sandbox`."""
     output = u_boot_console.run_command('fstypes')
     assert "Supported filesystems:" in output