message: Update documentation for relation types
diff: @@ -189,20 +189,26 @@ public:
  using FaceSet = typename topology_traits<TOPO>::FaceSet;
  using CellToNodeRelation = typename topology_traits<TOPO>::ZoneNodeRelation;
  - using CellToFaceRelation = typename topology_traits<TOPO>::ZoneFaceRelation;
  - using FaceToCellRelation = typename topology_traits<TOPO>::FaceZoneRelation;
  - using FaceToNodeRelation = typename topology_traits<TOPO>::FaceNodeRelation;
  - /*! \brief The types for face-cell and cell-face connectivity.
  + /*! \brief The types for face-cell and cell-face relations.
  *
  * Usually, each face will connect two cells. The exceptions are
  * - edge faces, which will connect to one cell. The other will be -1.
  * - some faces in a malformed mesh, which may join more than two cells.
  - * The concensus is that storing such a non-manifold mesh is not useful
  + * The consensus is that storing such a non-manifold mesh is not useful
  * so we only store the first two incident cells and return an error.
  + */
  + using CellToFaceRelation = typename topology_traits<TOPO>::ZoneFaceRelation;
  + using FaceToCellRelation = typename topology_traits<TOPO>::FaceZoneRelation;
  +
  + /*! \brief The type for face-node relations.
  *
  - * Face types are stored in the face-node connectivity.
  + * This is represented as a variable-cardinality relation regardless of
  + * whether the mesh is single-shape or mixed-shape, since a cell type may
  + * have different constituent face types.
  */
  + using FaceToNodeRelation = typename topology_traits<TOPO>::FaceNodeRelation;
  +
  using CellToNodeConnectivity =
  ConnectivityArray<topology_traits<TOPO>::cell_to_nodes>;
  