* Generate a rectangular plate with an (offset) cylindrical hole. The
* geometry consists of 2 regions:
* The first is a square region with length @p outer_radius and a hole of radius @p inner_radius .
- * Cells in this regions will have TransfiniteInterpolationManifold with
+ * Cells in this region will have TransfiniteInterpolationManifold with
* manifold id @p tfi_manifold_id attached to them. Additionally, the boundary
* faces of the hole will be associated with a PolarManifold (in 2D) or
* CylindricalManifold (in 3D). The center of this
* The second region describes the remainder of the bulk material. It is
* specified via padding
* parameters @p pad_bottom, @p padding_top, @p padding_left and @p padding_right.
- * All cells in this regions will have a FlatManifold attached to them.
+ * All cells in this region will have a FlatManifold attached to them.
* The final width of the plate will be <code>padding_left + 2*outer_radius +
* padding_right</code>, while its length is <code>padding_top +
* 2*outer_radius + padding_bottom</code>. Three out of four paddings are