doc: Correct spelling mistake

s/availibility/availability

Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com>

doc/ctrl_iface.doxygen

@@ -557,7 +557,7 @@ Device Address>" to indicate the entry following the specified peer
 
 Enable/disable extended listen timing. Without parameters, this
 command disables extended listen timing. When enabling the feature,
-two parameters are used: availibility period and availability interval
+two parameters are used: availability period and availability interval
 (both in milliseconds and with range of 1-65535).
 
 

doc/p2p.doxygen

@@ -313,7 +313,7 @@ services. This value is included in all SD request and response
 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.