Various changes and corrections of ortography and redaction.

[MatiasMGz]

Steps

• [X] Write a good description of what your PR does (and WHY it does it).
• [X] Add yourself to CONTRIBUTORS if you are a new contributor.
• [X] Ensure make preflight completes successfully.

Description

This PR makes various changes like:

1. Changed the copyright year to 2025 in some other files.
2. {NO} now prints 2 and not 0. 2 is the number that actually works in the game.
3. Corrections of ortography and redaction in the docs.

Type of Changes

	Type
✓	:scroll: Docs

[MatiasMGz]

I will revise the entire file of CHANGELOG.md in another PR. I don't have time for more than 1000 lines rn.

[IvanPragma]

useless and ugly <3 for copyright year it's better to use f'Copyright (C) 2011-{datetime.now().year} Eric Froemling', I think

[MatiasMGz]

The main point are the corrections of ortography and redaction and the {NO} print correction. The only thing that is out of the PR is CHANGELOG.md, its going into a separate PR.

[EraOSBeta]

Closing as stale; will however open an issue for the kick vote thing since comments in the code about it seem to contradict each other.