FIX: update documentation

Author: mnoergaard

docs/usage.rst

@@ -273,7 +273,7 @@ The presets are defined in ``petprep/data/reference_mask/config.json``.
 
 
 When a reference mask is created, *PETPrep* also generates a TSV table
-``ref-<name>_morph.tsv`` saved under the ``anat/`` derivatives folder. This
+``label-<name>_desc-ref_morph.tsv`` saved under the ``anat/`` derivatives folder. This
 table mirrors the segmentation morph tables and contains three columns:
 ``index``, ``name`` and ``volume-mm3``.
 
@@ -285,7 +285,7 @@ For example, to extract a mask of thalamus to use as a reference region, you can
     $ petprep /data/bids_root /out participant \
         --seg gtm --ref-mask-name thalamus --ref-mask-index 10 49
 
-The indices of the regions from a given segmentation can be found in the corresponding ``/anat/sub-<participant_label>_desc-<segmentation>_morph.tsv``.
+The indices of the regions from a given segmentation can be found in the corresponding ``/anat/sub-<participant_label>_seg-<segmentation>_morph.tsv``.
 
 Troubleshooting
 ---------------

docs/workflows.rst

@@ -560,7 +560,7 @@ image ``seg-<seg>_dseg.nii.gz`` and a TSV table of region volumes
 ``seg-<seg>_morph.tsv`` saved under the ``anat/`` derivatives folder.
 
 Reference masks generated via ``--ref-mask-name`` create a similar
-``ref-<name>_morph.tsv`` file. These TSVs share the same columns as the
+``label-<name>_desc-ref_morph.tsv`` file. These TSVs share the same columns as the
 segmentation morph tables: ``index``, ``name`` and ``volume-mm3``.
 
 For example, the raphe segmentation can be enabled with::