frames. The value received from the peers will be included in the
\ref p2p_config::sd_request() and \ref p2p_config::sd_response() callbacks. The
value to be sent to the peers is incremented with a call to
-\ref p2p_sd_service_update() whenever availibility of the local services
+\ref p2p_sd_service_update() whenever availability of the local services
changes.