docs: update governance document to include roadmap changes policy

[John15321]

This pull request updates the project's governance.md to clarify meeting participation, correct a documentation link, and formalize the process for making roadmap changes. These improvements help make project governance more transparent and inclusive for contributors and community members.

Community engagement and meeting participation:

• Added language to encourage and clarify that all community members—not just maintainers—are welcome and encouraged to participate in Developer Sync meetings, and explained the value of community involvement in shaping project direction.

Roadmap change process:

• Introduced a new "Roadmap Changes" section outlining how changes to the project roadmap should be proposed, discussed, and approved, including requirements for public discussion and decision-making during meetings. [1] [2]

Documentation improvements:

• Fixed the CONTRIBUTING.md link to use a relative path, ensuring it works correctly within the repository.

[chewi]

Is there a reason why Maintainers is capitalised but contributors is not?

[John15321]

Is there a reason why Maintainers is capitalised but contributors is not?

my dyslexia

[LexiNadolski]

LGTM 👍

[John15321]

Is there a reason why Maintainers is capitalised but contributors is not?

Fixed

[John15321]

LGTM 👍

@LexiNadolski could you also approve?

[t-lo]

LGTM, thank you!

[LexiNadolski]

After conversations last week, I think we need to rework this. @John15321

[John15321]

After conversations last week, I think we need to rework this. @John15321

Yeah, the whole docs needs refactoring. Wanna sync about the last week? @LexiNadolski