some bugs in function

the "x" Arguments in function approx_distances.

"amd" should be "and"

object that can be coerced to a bounding box with bb, or a pair of coordintes
(vector of two). In the former case, the distance across the horizontal and vertical
centerlines of the bounding box are approximated. In the latter case, y is also
required; the distance between points x amd y is approximated.

object that can be coerced to a bounding box with bb, or a pair of coordintes
(vector of two). In the former case, the distance across the horizontal and vertical
centerlines of the bounding box are approximated. In the latter case, y is also
required; the distance between points x amd and y is approximated.

Search the documentation for the approx_distances function and inspect the argument description quoted in the issue. Correct the visible typo from "amd" to "and"; the work is done when the rendered documentation consistently describes x and y correctly.