FIX: PEPOLAR & mapped fieldmaps not showing up in reports

Resolves: #157.

Author: oesteban

dmriprep/config/reports-spec.yml

@@ -27,7 +27,7 @@ sections:
       overlaid on the participant's T1w template.
     subtitle: Surface reconstruction
 - name: <em>B<sub>0</sub></em> field mapping
-  ordering: session,run,fmapid
+  ordering: session,acquisition,run,fmapid
   reportlets:
   - bids: {datatype: figures, desc: mapped, suffix: fieldmap}
     caption: Inhomogeneities of the <em>B<sub>0</sub></em> field introduce (oftentimes severe) spatial distortions