Fix typo.

    common method is <code>Basic</code>, and this is the method

    implemented by <module>mod_auth_basic</module>. It is important to be aware,

    however, that Basic authentication sends the password from the client to

    the browser unencrypted. This method should therefore not be used for

    the server unencrypted. This method should therefore not be used for

    highly sensitive data. Apache supports one other authentication method:

    <code>AuthType Digest</code>. This method is implemented by <module

    >mod_auth_digest</module> and is much more secure. Only the most recent