Fix capitalization.

src/uas/UAS.cc

@@ -561,7 +561,7 @@ void UAS::receiveMessage(LinkInterface* link, mavlink_message_t message)
 
             if (statechanged && ((int)state.system_status == (int)MAV_STATE_CRITICAL || state.system_status == (int)MAV_STATE_EMERGENCY))
             {
-                GAudioOutput::instance()->say(QString("emergency for system %1").arg(this->getUASID()), GAudioOutput::AUDIO_SEVERITY_EMERGENCY);
+                GAudioOutput::instance()->say(QString("Emergency for system %1").arg(this->getUASID()), GAudioOutput::AUDIO_SEVERITY_EMERGENCY);
                 QTimer::singleShot(3000, GAudioOutput::instance(), SLOT(startEmergency()));
             }
             else if (modechanged || statechanged)