Fix incorrect urls in the docs

docs/advanced_topics/amp.rst

@@ -163,7 +163,7 @@ file for the ``/amp`` prefix:
         # Change this line to point at your amp_urls instead of Wagtail's urls
         path('amp/', include(wagtail_amp_urls)),
 
-        path('', include(wagtail_urls)),
+        re_path(r'', include(wagtail_urls)),
     ]
 
 After this, there shouldn't be any noticeable difference to the AMP version of

docs/advanced_topics/images/image_serve_view.rst

@@ -33,7 +33,7 @@ Add an entry for the view into your URLs configuration:
         ...
 
         # Ensure that the wagtailimages_serve line appears above the default Wagtail page serving route
-        path('', include(wagtail_urls)),
+        re_path(r'', include(wagtail_urls)),
     ]
 
 Usage

docs/reference/contrib/sitemaps.rst

@@ -52,7 +52,7 @@ sitemap:
         ...
 
         # Ensure that the 'sitemap' line appears above the default Wagtail page serving route
-        path('', include(wagtail_urls)),
+        re_path(r'', include(wagtail_urls)),
     ]