Updates and Clarifications for Policy Zero

[Samyoul]

Description:

While reviewing Policy Zero, I identified some areas for improvement and potential updates. Here's a summary:

Missing "Why" Section

• Problem: Policy Zero does not currently include a "Why" section addressing the question:

  "Why has this policy been introduced?"

• Suggestion: Add a justification section to Policy Zero to align with the requirement for policies to include their rationale.

Section Title Update

• Current: # Submitting a Policy Proposal
• Proposed: # Introducing a Policy Proposal
• Reason: This update would make the title more consistent with the intended action and terminology.

Policy File Name Conventions

• Current:

  Policy file names MUST follow [File name conventions for ADRs](https://github.com/joelparkerhenderson/architecture-decision-record?tab=readme-ov-file#file-name-conventions-for-adrs), e.g. submitting-policy.md.

• Proposed:

  Policy file names MUST follow [File name conventions for ADRs](https://github.com/joelparkerhenderson/architecture-decision-record?tab=readme-ov-file#file-name-conventions-for-adrs), e.g. introduce-policy.md.

• Reason: Update the example file name to match the ADR specification and align with the suggested section title change.