add FaceView ref to Mesh docstring

Author: ffreyer

src/basic_types.jl

@@ -523,7 +523,8 @@ few restrictions:
 AbstractVector must match in length. For FaceViews, the number of faces needs to match.)
 
 See also: [`vertex_attributes`](@ref), [`coordinates`](@ref), [`normals`](@ref), 
-[`texturecoordinates`](@ref), [`decompose`](@ref), [`clear_faceviews`](@ref)
+[`texturecoordinates`](@ref), [`decompose`](@ref), [`FaceView`](@ref), 
+[`clear_faceviews`](@ref)
 
 The `faces` field is a collection `<: AbstractVector{FaceType}` containing faces 
 that describe how vertices are connected. Typically these are `(GL)TriangleFace`s