[4.0.x] Fixed #33544 -- Expanded the TEMPLATES section of the Deploym…

…ent checklist.

Clarified that the cached template loader is enabled by default when
DEBUG = False.

Backport of 5cc9464 from main

docs/howto/deployment/checklist.txt

@@ -207,8 +207,10 @@ This helps a lot on virtualized hosts with limited network performance.
 --------------------
 
 Enabling the cached template loader often improves performance drastically, as
-it avoids compiling each template every time it needs to be rendered. See the
-:ref:`template loaders docs <template-loaders>` for more information.
+it avoids compiling each template every time it needs to be rendered. When
+:setting:`DEBUG = False <DEBUG>`, the cached template loader is enabled
+automatically. See :class:`django.template.loaders.cached.Loader` for more
+information.
 
 Error reporting
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