##### SUMMARY
The warning that `become` show, point to a non-existing page.

The reference: https://docs.ansible.com/ansible/become.html#becoming-an-unprivileged-user
Should be: https://docs.ansible.com/ansible/user_guide/become.html#risks-of-becoming-an-unprivileged-user

```
  msg: |-
    Failed to set permissions on the temporary files Ansible needs to create when becoming an unprivileged user (rc: 1, err: chown: changing ownership of '/var/tmp/ansible-tmp-1587201990.1515293-106086999273646/': Operation not permitted
    chown: changing ownership of '/var/tmp/ansible-tmp-1587201990.1515293-106086999273646/AnsiballZ_postgresql_db.py': Operation not permitted
    }). For information on working around this, see https://docs.ansible.com/ansible/become.html#becoming-an-unprivileged-user
```

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
become

##### ANSIBLE VERSION
```
ansible 2.9.6
  config file = None
  configured module search path = ['/home/robertdb/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.7/site-packages/ansible
  executable location = /usr/local/bin/ansible
  python version = 3.7.6 (default, Jan 30 2020, 09:44:41) [GCC 9.2.1 20190827 (Red Hat 9.2.1-1)]
```

##### CONFIGURATION
```
# empty.
```

##### OS / ENVIRONMENT
Controller: Fedora 31
Managed node: Ubuntu 19

##### STEPS TO REPRODUCE
I use [this](https://github.com/robertdebock/ansible-role-postgres/blob/master/tasks/main.yml#L70) role on Ubuntu 19. (Using [this](https://github.com/robertdebock/ansible-tester) code.

##### EXPECTED RESULTS
The chapter is found immediately.

##### ACTUAL RESULTS
The documentation page loads (good), but does not jump to the right chapter.
'''
        Removes the BECOME-SUCCESS message from the data.
        '''
        if data.strip().startswith('BECOME-SUCCESS-'):
            data = re.sub(r'^((\r)?\n)?BECOME-SUCCESS.*(\r)?\n', '', data)
        return data
    def _update_module_args(self, module_name, module_args, task_vars):
        
        if self._play_context.check_mode:
            if not self._supports_check_mode:
                raise AnsibleError("check mode is not supported for this operation")
            module_args['_ansible_check_mode'] = True
        else:
            module_args['_ansible_check_mode'] = False
        
        no_target_syslog = C.config.get_config_value('DEFAULT_NO_TARGET_SYSLOG', variables=task_vars)
        module_args['_ansible_no_log'] = self._play_context.no_log or no_target_syslog
        
        module_args['_ansible_debug'] = C.DEFAULT_DEBUG
        
        module_args['_ansible_diff'] = self._play_context.diff
        
        module_args['_ansible_verbosity'] = display.verbosity
        
        module_args['_ansible_version'] = __version__
        
        module_args['_ansible_module_name'] = module_name