Fix the syntax [1] for the footnote about the onboard memory
configuration so that it renders properly in the generated html.
This also fixes a "Unknown target name" error when building with
newer versions of Sphinx (tested with 8.1.3).
[1] https://myst-parser.readthedocs.io/en/latest/syntax/typography.html#footnotes
Change-Id: I07a85b854a181794f82d8e6a739063d66378d2c7
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/85412
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
7f54139a81