[core] Update the documentation of the events.

Signed-off-by: Stéphane Galland <galland@arakhne.org>

main/apiplugins/io.sarl.core/src/io/sarl/core/events.sarl

@@ -263,6 +263,7 @@ final event SpaceDestroyed {
 /** Notifies other members the member with agentID has effectively 
  * integrated the holon context.
  * The event is fired within the default space of the context in which the new agent entered.
+ * The joining agent does not receive this event.
  * The source of the event is the parent agent.
  * The context id can be retrieved via {@code ev.source.spaceID.contextID}.
  */
@@ -301,6 +302,7 @@ final event MemberJoined {
 /** Notifies other members the member with agentID was 
  * excluded (forced to leave) the holon context parentContextID.
  * The event is fired within the default space of the context from which the agent was excluded.
+ * The excluded agent does not receive this event.
  * The source of the event is the parent agent.
  * The context id can be retrieved via {@code ev.source.spaceID.contextID}.
  */
@@ -338,6 +340,7 @@ final event MemberExcluded {
 
 /** Notifies other members the member with agentID has left the holon context.
  * The event is fired within the default space of the context from which the agent has left.
+ * The left agent does not receive this event.
  * The source of the event is the parent agent.
  * The context id can be retrieved via {@code ev.source.spaceID.contextID}.
  */