##### 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.
cmd = remote_module_path
            cmd = self._connection._shell.build_module_command(environment_string, shebang, cmd, arg_path=args_file_path).strip()
        
        
        if remote_files:
            
            remote_files = [x for x in remote_files if x]
            self._fixup_perms2(remote_files, self._get_remote_user())
        
        res = self._low_level_execute_command(cmd, sudoable=sudoable, in_data=in_data)
        
        data = self._parse_returned_data(res)
        
        
        if data.pop("_ansible_suppress_tmpdir_delete", False):
            self._cleanup_remote_tmp = False
        
        if 'results' in data and (not isinstance(data['results'], Sequence) or isinstance(data['results'], string_types)):
            data['ansible_module_results'] = data['results']
            del data['results']
            display.warning("Found internal 'results' key in module return, renamed to 'ansible_module_results'.")
        
        remove_internal_keys(data)
        if wrap_async:
            
            
            self._connection._shell.tmpdir = None
            
            data['changed'] = True