docs: create a top-level arch/ directory

As the first step in bringing some order to our architecture-specific
documentation, create a top-level arch/ directory and move arch.rst as its
index.rst file.

There is no change in the rendered docs at this point.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2023-03-14 16:39:37 -06:00
commit 4f1bb0386d
3 changed files with 29 additions and 29 deletions