Added some missing documentation tags

modules/juce_events/interprocess/juce_NetworkServiceDiscovery.h

@@ -28,6 +28,8 @@ namespace juce
     Contains classes that implement a simple protocol for broadcasting the availability
     and location of a discoverable service on the local network, and for maintaining a
     list of known services.
+
+    @tags{Events}
 */
 struct NetworkServiceDiscovery
 {
@@ -36,6 +38,8 @@ struct NetworkServiceDiscovery
 
         To use, simply create an instance of an Advertiser and it'll broadcast until
         you delete it.
+
+        @tags{Events}
     */
     struct Advertiser  : private Thread
     {
@@ -68,7 +72,10 @@ struct NetworkServiceDiscovery
     //==============================================================================
     /**
         Contains information about a service that has been found on the network.
+
         @see AvailableServiceList, Advertiser
+
+        @tags{Events}
     */
     struct Service
     {
@@ -87,7 +94,10 @@ struct NetworkServiceDiscovery
         Just create an instance of AvailableServiceList and it will start listening - you
         can register a callback with its onChange member to find out when services
         appear/disappear, and you can call getServices() to find out the current list.
+
         @see Service, Advertiser
+
+        @tags{Events}
     */
     struct AvailableServiceList  : private Thread,
                                    private AsyncUpdater