[test][test_commands] legends option replaced by titles option for histograms

bob/bio/base/test/test_commands.py

@@ -252,7 +252,7 @@ def test_hist():
     with runner.isolated_filesystem():
         result = runner.invoke(commands.hist, ['--criterion', 'eer', '--output',
                                                'HISTO.pdf', '-b', '30', '-e',
-                                               '-lg', 'A,B', dev1, test1, dev2,
+                                               '-ts', 'A,B', dev1, test1, dev2,
                                                test2])
         if result.output:
             click.echo(result.output)