docs: maintainers_include: store maintainers entries on a dict

docs: maintainers_include: store maintainers entries on a dict

Instead of creating just a big output data, store entries inside
a dictionary. Doing that simplifies the parser a little bit
and make the code clearer.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <4ad88179e03436984f29780ae380d50591f86c67.1777987027.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <f7d1a206475ee54f757b2642882013097cb5453a.1778309595.git.mchehab+huawei@kernel.org>