Documentation: nova: Update the todo list

Documentation: nova: Update the todo list

This small patch updates the nova todo list to
remove some tasks that have been solved lately:
* COHA is solved in this patch series
* TRSM was solved recently [1]

[1] https://lore.kernel.org/rust-for-linux/DCEJ9SV4LBJL.11EUZVXX6EB9H@nvidia.com/

Signed-off-by: Daniel del Castillo <delcastillodelarosadaniel@gmail.com>
[acourbot@nvidia.com: set prefix to "Documentation: nova:".]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Message-ID: <20251104193756.57726-4-delcastillodelarosadaniel@gmail.com>