Expose some missing docstrings to devdocs (#964)

docs/src/devdocs/FEValues.md

@@ -6,8 +6,9 @@
     * [`CellValues`](@ref)
   * `AbstractFacetValues`
     * [`FacetValues`](@ref)
-    * [`BCValues`](@ref)
+    * [`BCValues`](@ref Ferrite.BCValues)
   * [`PointValues`](@ref)
+  * [`InterfaceValues`](@ref)
 
 
 ## Internal types
@@ -18,6 +19,13 @@ Ferrite.FunctionValues
 Ferrite.BCValues
 ```
 
+## Internal utilities
+```@docs
+Ferrite.embedding_det
+Ferrite.shape_value_type
+Ferrite.shape_gradient_type
+```
+
 ## Custom FEValues
 Custom FEValues, `fe_v::AbstractValues`, should normally implement the [`reinit!`](@ref) method. Subtypes of `AbstractValues` have default implementations for some functions, but require some lower-level access functions, specifically
 

docs/src/devdocs/elements.md

@@ -25,9 +25,12 @@ Ferrite.get_coordinate_eltype(::Ferrite.AbstractGrid)
 Ferrite.get_coordinate_eltype(::Node)
 Ferrite.toglobal
 Ferrite.sortface
+Ferrite.sortface_fast
 Ferrite.sortedge
+Ferrite.sortedge_fast
 Ferrite.element_to_facet_transformation
 Ferrite.facet_to_element_transformation
 Ferrite.InterfaceOrientationInfo
 Ferrite.transform_interface_points!
+Ferrite.get_transformation_matrix
 ```

src/FEValues/FacetValues.jl

@@ -142,7 +142,7 @@ function reinit!(fv::FacetValues, cell::Union{AbstractCell, Nothing}, x::Abstrac
     @inbounds for (q_point, w) in pairs(getweights(fv.fqr, face_nr))
         mapping = calculate_mapping(geo_mapping, q_point, x)
         J = getjacobian(mapping)
-        # See the `Ferrite.embedded_det` docstring for more background
+        # See the `Ferrite.embedding_det` docstring for more background
         weight_norm = weighted_normal(J, getrefshape(geo_mapping.ip), face_nr)
         detJ = norm(weight_norm)
         detJ > 0.0 || throw_detJ_not_pos(detJ)