message: Add triton task to PWGLFnuclexLInkDef
diff: #pragma link C++ class AliLightNTrackMCHist+;
  #pragma link C++ class AliAnalysisTaskAntipd+;
  #pragma link C++ class AliAnalysisTaskHe3+;
  +#pragma link C++ class AliAnalysisH3MC+;
  #pragma link C++ class AliAnalysisHe3MC+;
  #pragma link C++ class AliAnalysisTaskHe3_ESD+;
  #pragma link C++ class AliAnalysisTaskNuclei+;
  