renamed VtxZ histogram (#436)

Author: Archita-Dash

codeJE/Compare.C

@@ -20,7 +20,7 @@ Int_t Compare(TString pathFileO2 = "AnalysisResults_O2.root", TString pathFileAl
   // Histogram specification: axis label, AliPhysics name, O2Physics path/name, rebin, log scale histogram, log scale ratio, projection axis
 
   VecSpecHis vecHisEvents;
-  AddHistogram(vecHisEvents, "#it{z}_{prim. vtx.} (cm)", "Events Vertex Distribution", "jet-validation-track-collision-qa/controlCollisionVtxZ", 1, 0, 0);
+  AddHistogram(vecHisEvents, "#it{z}_{prim. vtx.} (cm)", "collisionVtxZ", "jet-validation-track-collision-qa/controlCollisionVtxZ", 1, 0, 0);
 
   VecSpecHis vecHisJets;
   AddHistogram(vecHisJets, "#it{p}_{T, ch jet} (GeV/#it{c})", "jetPt", "jet-validation-track-collision-qa/jetPt", 1, 1, 0);