##### 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.

lines.append(line)
                                continue
                            fields[1] = self.password
                            fields[2] = str(int(time.time() // 86400))
                            if minweeks:
                                try:
                                    fields[3] = str(int(minweeks) * 7)
                                except ValueError:
                                    
                                    pass
                            if maxweeks:
                                try:
                                    fields[4] = str(int(maxweeks) * 7)
                                except ValueError:
                                    
                                    pass
                            if warnweeks:
                                try:
                                    fields[5] = str(int(warnweeks) * 7)
                                except ValueError:
                                    
                                    pass
                            line = ':'.join(fields)
                            lines.append('%s\n' % line)
                    with open(self.SHADOWFILE, 'w+') as f:
                        f.writelines(lines)
                except Exception as err:
                    self.module.fail_json(msg="failed to update users password: %s" % to_native(err))
        return (rc, out, err)
    def modify_user_usermod(self):