[PWGLF] Fix missing centrality axis in hEff histos (#10587)

Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: gbencedi

PWGMM/Mult/Tasks/dndetaMFTPbPb.cxx

@@ -679,13 +679,13 @@ struct DndetaMFTPbPb {
 
     if (doprocessEfficiencyCentFT0C) {
       qaregistry.add({"Tracks/Centrality/hEffRec",
-                      "; p_{T} (GeV/c); #varphi; #eta; Z_{vtx} (cm); occupancy",
+                      "; p_{T} (GeV/c); #varphi; #eta; Z_{vtx} (cm); centrality; occupancy",
                       {HistType::kTHnSparseF,
-                       {ptAxis, phiAxis, etaAxis, zAxis, occupancyAxis}}});
+                       {ptAxis, phiAxis, etaAxis, zAxis, centralityAxis, occupancyAxis}}});
       qaregistry.add({"Tracks/Centrality/hEffFake",
-                      "; p_{T} (GeV/c); #varphi; #eta; Z_{vtx} (cm); occupancy",
+                      "; p_{T} (GeV/c); #varphi; #eta; Z_{vtx} (cm); centrality; occupancy",
                       {HistType::kTHnSparseF,
-                       {ptAxis, phiAxis, etaAxis, zAxis, occupancyAxis}}});
+                       {ptAxis, phiAxis, etaAxis, zAxis, centralityAxis, occupancyAxis}}});
     }
   }