feat: add shorthand link for downloads/latest/ (#2570)

Author: JacobCoffee

downloads/urls.py

@@ -5,6 +5,7 @@
 urlpatterns = [
     re_path(r'latest/python2/?$', views.DownloadLatestPython2.as_view(), name='download_latest_python2'),
     re_path(r'latest/python3/?$', views.DownloadLatestPython3.as_view(), name='download_latest_python3'),
+    re_path(r'latest/?$', views.DownloadLatestPython3.as_view(), name='download_latest_python3'),
     path('operating-systems/', views.DownloadFullOSList.as_view(), name='download_full_os_list'),
     path('release/<slug:release_slug>/', views.DownloadReleaseDetail.as_view(), name='download_release_detail'),
     path('<slug:slug>/', views.DownloadOSList.as_view(), name='download_os_list'),