gh-41312: Explain how to disable generating targets for docbuilding at pip install step

Follow-up on #41191. In the
"background information" section below there's a guide how to do the
equivalent with `meson`, but having more can't hurt (hopefully).

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- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation and checked the documentation
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### ⌛ Dependencies

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URL: #41312
Reported by: user202729
Reviewer(s):

Author: Release Manager

build/pkgs/configure/checksums.ini

@@ -1,3 +1,3 @@
 tarball=configure-VERSION.tar.gz
-sha1=76e36392eb4d20d4227973f86f5844387a91a06b
-sha256=fdb7c78df304acf8f90c51e1f217955ecd240f200776beb98b7a9f8024a3bdb4
+sha1=913dff3a94c24015249a01a380887618020081df
+sha256=4d02a57142c84651054601dfd7a688737829fd12046dbe166f21ac4136a83d93

build/pkgs/configure/package-version.txt

@@ -1 +1 @@
-7262ca702f91ecc1d2fac081968e79795c013e02
+e8e64a6d7bf508c67a6abf5a3213f43904817584

src/doc/en/installation/source.rst

@@ -208,6 +208,15 @@ Remarks
   run in parallel based on the number of CPU available. This can be adjusted
   by passing ``--config-settings=compile-args=-jN`` to ``pip install``.
 
+  If you don't need to build the documentation, pass
+  ``--config-settings=setup-args=-Dbuild-docs=false`` to ``pip install``
+  to speed up the target generation step.
+
+  The parameter ``setup-args`` etc. are documented in
+  `<https://mesonbuild.com/meson-python/how-to-guides/config-settings.html>`_.
+  ``setup-args`` are passed to ``meson``, effect ``compile-args``
+  are passed to ``ninja``.
+
   ``--verbose`` can be passed to ``pip install``, then the meson commands
   internally used by pip will be printed out.