File naming mismatch between init_dissection_afq_trk and init_dissection_afq_trk

[Paolopost]

The init_dissection_afq_tck script gets the files generated by init_dissection_afq_trk and produces the correspondent file with the suffix ".tck" instead of ".trk".
The file currently generated by init_dissection_afq_trk is:
sub-0001_dwi_DTI_var_dtidetlife_run-01_tract_subset-ARCl_tract.trk
while the script init_dissection_afq_tck is looking for
sub-0001_dwi_DTI_var_dtidetlife_run-01_tract_var-afq_set-ATRl_track.trk
This second filename is the correct one. The script init_dissection_afq_trk should be fixed to generated the correct file name.

[Paolopost]

WARNING: This issue might affect the script o3d_tree.py