[Common] Update bin labels in centralityStudy (#17949)

Author: jesgum

Common/Tasks/centralityStudy.cxx

@@ -266,7 +266,8 @@ struct CentralityStudy {
       histos.get<TH1>(HIST("hCollisionSelection"))->GetXaxis()->SetBinLabel(15, "rejectCollInTimeRangeNarrow");
       histos.get<TH1>(HIST("hCollisionSelection"))->GetXaxis()->SetBinLabel(16, "em/upc rejection");
       histos.get<TH1>(HIST("hCollisionSelection"))->GetXaxis()->SetBinLabel(17, "isFlangeEvent");
-      histos.get<TH1>(HIST("hCollisionSelection"))->GetXaxis()->SetBinLabel(18, "bcsel");
+      histos.get<TH1>(HIST("hCollisionSelection"))->GetXaxis()->SetBinLabel(18, "INEL>0");
+      histos.get<TH1>(HIST("hCollisionSelection"))->GetXaxis()->SetBinLabel(19, "bcsel");
 
       histos.add("hFT0A_Collisions", "hFT0A_Collisions", kTH1D, {axisMultUltraFineFT0A});
       histos.add("hFT0C_Collisions", "hFT0C_Collisions", kTH1D, {axisMultUltraFineFT0C});