Refs #20910 -- Replaced snippet directive with code-block.

docs/topics/http/file-uploads.txt

@@ -21,8 +21,8 @@ Basic file uploads
 
 Consider a simple form containing a :class:`~django.forms.FileField`:
 
-.. snippet::
-    :filename: forms.py
+.. code-block:: python
+    :caption: forms.py
 
     from django import forms
 
@@ -46,8 +46,8 @@ Most of the time, you'll simply pass the file data from ``request`` into the
 form as described in :ref:`binding-uploaded-files`. This would look
 something like:
 
-.. snippet::
-    :filename: views.py
+.. code-block:: python
+    :caption: views.py
 
     from django.http import HttpResponseRedirect
     from django.shortcuts import render
@@ -133,8 +133,8 @@ Uploading multiple files
 If you want to upload multiple files using one form field, set the ``multiple``
 HTML attribute of field's widget:
 
-.. snippet::
-    :filename: forms.py
+.. code-block:: python
+    :caption: forms.py
 
     from django import forms
 
@@ -145,8 +145,8 @@ Then override the ``post`` method of your
 :class:`~django.views.generic.edit.FormView` subclass to handle multiple file
 uploads:
 
-.. snippet::
-    :filename: views.py
+.. code-block:: python
+    :caption: views.py
 
     from django.views.generic.edit import FormView
     from .forms import FileFieldForm

docs/topics/http/urls.txt

@@ -761,8 +761,8 @@ and one called ``'publisher-polls'``. Assume we have enhanced that application
 so that it takes the instance namespace into consideration when creating and
 displaying polls.
 
-.. snippet::
-    :filename: urls.py
+.. code-block:: python
+    :caption: urls.py
 
     from django.urls import include, path
 
@@ -771,8 +771,8 @@ displaying polls.
         path('publisher-polls/', include('polls.urls', namespace='publisher-polls')),
     ]
 
-.. snippet::
-    :filename: polls/urls.py
+.. code-block:: python
+    :caption: polls/urls.py
 
     from django.urls import path
 
@@ -830,8 +830,8 @@ at the same level as the ``urlpatterns`` attribute. You have to pass the actual
 module, or a string reference to the module, to :func:`~django.urls.include`,
 not the list of ``urlpatterns`` itself.
 
-.. snippet::
-    :filename: polls/urls.py
+.. code-block:: python
+    :caption: polls/urls.py
 
     from django.urls import path
 
@@ -844,8 +844,8 @@ not the list of ``urlpatterns`` itself.
         ...
     ]
 
-.. snippet::
-    :filename: urls.py
+.. code-block:: python
+    :caption: urls.py
 
     from django.urls import include, path