fix: Inconsistencies in RULES.md against underlying source

[bdferris-v2]

Specifically, this PR updates RULES.md to:

• Fix incorrectly named fields: docs should match underlying field names in Java source / JSON schema
• Add missing fields: docs should contain all fields from Java source / JSON schema
• Fix inconsistent formatting
• Fix two incorrectly-named fields in the Java source

This is an intermediate PR that brings us one step closer to alignment and generation of Notice documentation from the source code itself per #1324.

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with gradle test to make sure you didn't break anything
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues

[bdferris-v2]

@isabelle-dr this is mostly a RULES.md update so assigning to your for review

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 0 out of 1391 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1391 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1391 sources (~0 %) are corrupted.
Commit: 60320ec
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[isabelle-dr]

LGTM, thank you for this contribution @bdferris-v2 !

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 0 out of 1419 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1419 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1419 sources (~0 %) are corrupted.
Commit: 4a0bb29
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.