Fix Beam.mpi_share_distributions

Typo in the type of data to share for bunch profile. Not sure if there was an effect.

tracking/particles.py

@@ -692,7 +692,7 @@ class Beam:
         self.mpi.comm.Allgather([center,  MPI.DOUBLE], [self.mpi.center_all, MPI.DOUBLE])
         
         self.mpi.profile_all = np.empty((len(self), len(profile)), dtype=np.int64)
-        self.mpi.comm.Allgather([profile,  MPI.DOUBLE], [self.mpi.profile_all, MPI.INT64_T])
+        self.mpi.comm.Allgather([profile,  MPI.INT64_T], [self.mpi.profile_all, MPI.INT64_T])
         
         charge_per_mp_all = self.mpi.comm.allgather(bunch.charge_per_mp)
         self.mpi.charge_per_mp_all = charge_per_mp_all