update manpages - challenger - OAuth 2.0-based authentication service that validates user can receive messages at a certain address

commit e55616e0bcea80466de167640d1dbae6108741d2
parent 92416fe5266cca610eb5f00f4468eedfc3a23a24
Author: Christian Grothoff <grothoff@gnunet.org>
Date:   Thu,  7 Sep 2023 16:33:56 +0200

update manpages

	challenger OAuth 2.0-based authentication service that validates user can receive messages at a certain address
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