##### SUMMARY
The documentation of the module *user* / parameter *shell* states:

https://github.com/ansible/ansible/blob/8edad83ae029d7838a6d6347576d2ddbcce12ad0/lib/ansible/modules/system/user.py#L79

But there are no (shell specific) notes.
##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
user / docs

##### ANSIBLE VERSION
devel branch

##### CONFIGURATION
N/A

##### OS / ENVIRONMENT
N/A

##### ADDITIONAL INFORMATION
Either remove the sentence or provide some information in the notes section.

chunk = os.read(master_out_fd, 10240)
                            out_buffer += chunk
                            if prompt in out_buffer:
                                os.write(master_in_fd, to_bytes(self.ssh_passphrase, errors='strict') + b'\r')
                                prompt = second_prompt
                        else:
                            chunk = os.read(master_err_fd, 10240)
                            err_buffer += chunk
                            if prompt in err_buffer:
                                os.write(master_in_fd, to_bytes(self.ssh_passphrase, errors='strict') + b'\r')
                                prompt = second_prompt
                        if b'Overwrite (y/n)?' in out_buffer or b'Overwrite (y/n)?' in err_buffer:
                            
                            return (None, 'Key already exists', '')
                rc = p.returncode
                out = to_native(out_buffer)
                err = to_native(err_buffer)
            except OSError as e:
                return (1, '', to_native(e))
        else:
            cmd.append('-N')
            cmd.append('')
            (rc, out, err) = self.execute_command(cmd, data=overwrite)
        if rc == 0 and not self.module.check_mode:
            
            
            os.chown(ssh_key_file, info[2], info[3])
            os.chown('%s.pub' % ssh_key_file, info[2], info[3])
        return (rc, out, err)
    def ssh_key_fingerprint(self):