message: Add task for MSDibaryons
diff: /// Exotica
  /// * Dibaryons
  #pragma link C++ class AliAnalysisTaskDibaryons+;
  +/// * MSDibaryons
  +#pragma link C++ class AliAnalysisTaskMSDibaryons+;
  /// * Hdibaryon
  #pragma link C++ class AliAnalysisTaskHdibaryonLPpi+;
  /// * LambdaN
  