docs/devel: Fix link to developer mailing lists

Ammends commit 9f73de8d 'docs: rSTify
the "SubmitAPatch" wiki'.

Cc: qemu-stable@nongnu.org
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20220520180109.8224-11-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

docs/devel/submitting-a-patch.rst

@@ -18,9 +18,9 @@ one-shot fix, the bare minimum we ask is that:
    <http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/SubmittingPatches?id=f6f94e2ab1b33f0082ac22d71f66385a60d8157f#n297>`__
    policy.) ``git commit -s`` or ``git format-patch -s`` will add one.
 -  All contributions to QEMU must be **sent as patches** to the
-   qemu-devel `mailing list <MailingLists>`__. Patch contributions
-   should not be posted on the bug tracker, posted on forums, or
-   externally hosted and linked to. (We have other mailing lists too,
+   qemu-devel `mailing list <https://wiki.qemu.org/Contribute/MailingLists>`__.
+   Patch contributions should not be posted on the bug tracker, posted on
+   forums, or externally hosted and linked to. (We have other mailing lists too,
    but all patches must go to qemu-devel, possibly with a Cc: to another
    list.) ``git send-email`` (`step-by-step setup
    guide <https://git-send-email.io/>`__ and `hints and