Review notice documentation formatting on rules.html

[davidgamez]

Describe the problem

The rules.html file is generated from the Java classes annotated with @GtfsValidationNotice. Currently, the formatting and structure of the notice documentation are not standardized. Tasks:

• Review current documentation and propose structure and common wording.
• Update notice annotation to reflect the new standardized structure.
• Review generated rules.html file.

Suggest a fix or an alternative

No response