Align cache updated signal with method wording

libnymea-core/hardware/network/networkdevicediscoveryimpl.cpp

@@ -603,7 +603,7 @@ void NetworkDeviceDiscoveryImpl::finishDiscovery()
     m_running = false;
     emit runningChanged(m_running);
 
-    emit networkDeviceInfoCacheUpdated();
+    emit cacheUpdated();
 
     m_lastDiscovery = QDateTime::currentDateTime();
 

libnymea/network/networkdevicediscovery.h

@@ -71,7 +71,7 @@ public:
 
 signals:
     void runningChanged(bool running);
-    void networkDeviceInfoCacheUpdated();
+    void cacheUpdated();
 
 };