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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
```

ssh_key_file = self.get_ssh_key_path()
        if not os.path.exists(ssh_key_file):
            return (1, 'SSH Key file %s does not exist' % ssh_key_file, '')
        cmd = [self.module.get_bin_path('ssh-keygen', True)]
        cmd.append('-l')
        cmd.append('-f')
        cmd.append(ssh_key_file)
        return self.execute_command(cmd, obey_checkmode=False)
    def get_ssh_public_key(self):
        ssh_public_key_file = '%s.pub' % self.get_ssh_key_path()
        try:
            with open(ssh_public_key_file, 'r') as f:
                ssh_public_key = f.read().strip()
        except IOError:
            return None
        return ssh_public_key
    def create_user(self):
        
        return self.create_user_useradd()
    def remove_user(self):
        
        return self.remove_user_userdel()
    def modify_user(self):
        
        return self.modify_user_usermod()
    def create_homedir(self, path):