### Summary

The "test_copy.py" module has a bit shifted in the "dir all perms" example under "Info helpful for making new test cases", and also has a misplaced comma.

### Issue Type

Documentation Report

### Component Name

test/units/modules/test_copy.py

### Ansible Version

```console
$ ansible --version
ansible [core 2.16.0.dev0] (fix_test_doc a84b3a4e72) last updated 2023/04/08 10:56:13 (GMT -600)
  config file = None
  configured module search path = ['/home/sean/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /home/sean/software/ansible-realgo/lib/ansible
  ansible collection location = /home/sean/.ansible/collections:/usr/share/ansible/collections
  executable location = bin/ansible
  python version = 3.10.6 (main, Mar 10 2023, 10:55:28) [GCC 11.3.0] (/usr/bin/python3)
  jinja version = 3.0.3
  libyaml = True
```


### Configuration

```console
# if using a version older than ansible-core 2.12 you should omit the '-t all'
$ ansible-config dump --only-changed -t all
CONFIG_FILE() = None
EDITOR(env: EDITOR) = lvim
```


### OS / Environment

N/A

### Additional Information

PR incoming, diff goes into the details.

### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
('/dir1', []),
                  
                  ),
                 ) + THREE_DIRS_DATA
ONE_DIR_DATA = (('dir1',
                 
                 ('.', ['dir1']),
                 
                 ('dir1', []),
                 
                 ),
                ('dir1/',
                 
                 ('.', ['dir1']),
                 
                 ('dir1', []),
                 
                 ),
                ) + TWO_DIRS_DATA
@pytest.mark.parametrize('directory, expected', ((d[0], d[4]) for d in THREE_DIRS_DATA))
def test_split_pre_existing_dir_three_levels_exist(directory, expected, mocker):
    mocker.patch('os.path.exists', side_effect=[True, True, True])
    split_pre_existing_dir(directory) == expected
@pytest.mark.parametrize('directory, expected', ((d[0], d[3]) for d in TWO_DIRS_DATA))
def test_split_pre_existing_dir_two_levels_exist(directory, expected, mocker):
    mocker.patch('os.path.exists', side_effect=[True, True, False])
    split_pre_existing_dir(directory) == expected
@pytest.mark.parametrize('directory, expected', ((d[0], d[2]) for d in ONE_DIR_DATA))
def test_split_pre_existing_dir_one_level_exists(directory, expected, mocker):