[TrilinosApplication] Fix typo in trilinos_linear_solver_factory.cpp

[loumalouomega]

📝 Description

This PR refactors the trilinos_linear_solver_factory.cpp file in the TrilinosApplication of the Kratos project. The main changes in this commit include:

1. Cleaning up the code by removing commented-out lines and redundant comments.
2. Updating the license information.
3. Using using statements for type aliases.
4. Renaming some solver types for consistency.
5. Fixing a typo in the registration of the "mumsps2" solver (to be removed).
6. Improving the formatting and readability of the code.

🆕 Changelog

• Fix typo in trilinos_linear_solver_factory.cpp