docs/sp_SP: Move development-process to top of index

docs/sp_SP: Move development-process to top of index

All documents in development-process are now translated. Reorder
development-process to the top of the index for translated docs,
matching the layout in the main Documentation index.

Co-developed-by: Avadhut Naik <avadhut.naik@amd.com>
Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
Signed-off-by: Carlos Bilbao <carlos.bilbao.osdev@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20241129155851.1023884-8-carlos.bilbao.osdev@gmail.com