Update references to re_path

[jacobtylerwalls]

describe the issue

Throughout the docs we model URL configuration with, in many cases,re_path(). But that was a backwards compatibility shim added many versions of Django ago. We should model using path() instead of re_path().

From DEP 201:

Hopefully many projects will migrate to django.urls.path (the carrot) before being forced to migrate to django.urls.re_path (the stick).

please add links to existing docs or code (if relevant)

which release does this issue concern?