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##### SUMMARY
<!--- Explain the problem briefly below, add suggestions to wording or structure -->
In the user module, in the docs for the password field, there is a link to instructions on how to create a password hash for the module to consume. Said link is broken, and gives a 404.


Cf. [the corresponding line in the user module](https://github.com/ansible/ansible/blob/2b0cd2c13f2021f839600d601f75dea2c0343ed1/lib/ansible/modules/user.py#L92)


> HINT: Did you know the documentation has an "Edit on GitHub" link on every page ?

this one doesn't, or i just could not find it : /

##### ISSUE TYPE
- Documentation Report

##### COMPONENT NAME
<!--- Write the short name of the rst file, module, plugin, task or feature below, use your best guess if unsure -->
user module
##### ANSIBLE VERSION
<!--- Paste verbatim output from "ansible --version" between quotes -->
```paste below
latest
```

"""
    This is a generic User manipulation class that is subclassed
    based on platform.
    A subclass may wish to override the following action methods:-
      - create_user()
      - remove_user()
      - modify_user()
      - ssh_key_gen()
      - ssh_key_fingerprint()
      - user_exists()
    All subclasses MUST define platform and distribution (which may be None).
    """
    platform = 'Generic'
    distribution = None
    PASSWORDFILE = '/etc/passwd'
    SHADOWFILE = '/etc/shadow'
    SHADOWFILE_EXPIRE_INDEX = 7
    LOGIN_DEFS = '/etc/login.defs'
    DATE_FORMAT = '%Y-%m-%d'
    def __new__(cls, *args, **kwargs):