Documentation/index.md: Add "Community" menu entry

Clean up the main menu by adding a new entry `Community` and moving all
related menu entries below it.

Change-Id: Ib5df0156edaa739f15e6da8489968448876e1894
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62219
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions