feat(aa-log): update shell completion.

root/usr/share/zsh/site-functions/_aa-log.zsh

@@ -5,7 +5,7 @@ _aa-log() {
 	local IFS=$'\n'
 	_arguments : \
 		-f'[set a logfile or a prefix to the default log file]:FILE:__aa_files' \
-		-d'[show dbus session event]' \
+		-s'[parse systemd dbus logs]' \
 		-h'[display help information]'
 
 	_values -C 'profile names' ${$(__aa_profiles):-""}