message: fix histogram axis title
diff: @@ -2610,7 +2610,7 @@ TList * AliAnaPhoton::GetCreateOutputObjects()
  cenBinsArray.GetSize() - 1, cenBinsArray.GetArray());
  fhPtPhotonCentralitySM->SetYTitle("Supermodule number");
  fhPtPhotonCentralitySM->SetXTitle("#it{p}_{T} (GeV/#it{c})");
  - fhPtPhotonCentralitySM->SetYTitle("Centrality");
  + fhPtPhotonCentralitySM->SetZTitle("Centrality");
  outputContainer->Add(fhPtPhotonCentralitySM) ;
  }
  