[PWGHF] fix a small bug of configuration match for charm femto task (#13210)

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

Author: zhangbiao-phy

PWGHF/HFC/Tasks/taskCharmHadronsFemtoDream.cxx

@@ -23,6 +23,7 @@
 #include "PWGCF/FemtoDream/Core/femtoDreamPairCleaner.h"
 #include "PWGCF/FemtoDream/Core/femtoDreamParticleHisto.h"
 #include "PWGCF/FemtoDream/Core/femtoDreamUtils.h"
+#include "PWGHF/Core/DecayChannels.h"
 
 #include "Common/Core/RecoDecay.h"
 
@@ -54,6 +55,8 @@ using namespace o2::soa;
 using namespace o2::framework;
 using namespace o2::framework::expressions;
 using namespace o2::analysis::femtoDream;
+using namespace o2::hf_decay;
+using namespace o2::hf_decay::hf_cand_3prong;
 
 inline o2::framework::expressions::Node coshEta(o2::framework::expressions::Node&& eta)
 {
@@ -87,7 +90,7 @@ struct HfTaskCharmHadronsFemtoDream {
   /// Particle 2 (Charm Hadrons)
   Configurable<float> charmHadBkgBDTmax{"charmHadBkgBDTmax", 1., "Maximum background bdt score for Charm Hadron (particle 2)"};
   Configurable<int> charmHadCandSel{"charmHadCandSel", 1, "candidate selection for charm hadron"};
-  Configurable<int> charmHadMcSel{"charmHadMcSel", 2, "charm hadron selection for mc, partDplusToPiKPi (1), partLcToPKPi (2), partDsToKKPi (4), partXicToPKPi (8)"};
+  Configurable<int> charmHadMcSel{"charmHadMcSel", DecayChannelMain::LcToPKPi, "charm hadron selection for mc, DplusToPiKPi = 1, LcToPKPi = 17"};
   Configurable<float> charmHadFdBDTmin{"charmHadFdBDTmin", 0., "Minimum feed-down bdt score Charm Hadron (particle 2)"};
   Configurable<float> charmHadFdBDTmax{"charmHadFdBDTmax", 1., "Maximum feed-down bdt score Charm Hadron (particle 2)"};
   Configurable<float> charmHadMaxInvMass{"charmHadMaxInvMass", 2.45, "Maximum invariant mass of Charm Hadron (particle 2)"};