added \file

Author: nkaratze

PWGLF/Tasks/Strangeness/v0topologicalcuts.cxx

@@ -9,6 +9,7 @@
 // granted to it by virtue of its status as an Intergovernmental Organization
 // or submit itself to any jurisdiction.
 ///
+/// \file v0topologicalcuts.cxx
 /// \brief V0 task for production of invariant mass plots for Optimised Topological Cuts Analysis
 /// \author Nikolaos Karatzenis ([email protected])
 /// \author Roman Lietava ([email protected])