message: Fix Namespace of the cell monitor task
diff: PWG::EMCAL::AliEmcalCellMonitorTask *AddEmcalCellMonitorTask(const char *dummy = "", const char *subwagonname = "cellMonitor") {
  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
  - PWG::EMCAL::AliEmcalCellMonitorTask *mon = new AliEmcalCellMonitorTask(subwagonname);
  + PWG::EMCAL::AliEmcalCellMonitorTask *mon = new PWG::EMCAL::AliEmcalCellMonitorTask(subwagonname);
  mgr->AddTask(mon);
  TString contname(mgr->GetCommonFileName());
  