refactor: harmonize method names

examples/relay/RelayService.h

@@ -8,6 +8,7 @@ class RelayService : public Service {
 public:
     RelayService(NodeContext& ctx, TaskManager& taskMgr, int pin);
     void registerEndpoints(ApiServer& api) override;
+    void registerTasks(TaskManager& taskManager) override;
     const char* getName() const override { return "Relay"; }
 
     void turnOn();
@@ -15,8 +16,6 @@ public:
     void toggle();
 
 private:
-    void registerTasks();
-
     NodeContext& ctx;
     TaskManager& taskManager;
     int relayPin;