docs: add #nodejs-distributions Slack link to CONTRIBUTING

[MikeMcC399]

Description

Add the OpenJS Foundation Slack and the new #nodejs-distributions channel links to the CONTRIBUTING document.

Include also a link to the related #nodejs-release Slack channel.

Motivation and Context

The #nodejs-distributions Slack channel was created on March 11, 2026. Linking the channel into the CONTRIBUTING document allows it to be more easily discovered and used.

Slack extends the ability to conduct discussions that don't directly fit into GitHub Issues / Pull Request spaces.

Types of changes

• Documentation
• Version change (Update, remove or add more Node.js versions)
• Variant change (Update, remove or add more variants, or versions of variants)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other (none of the above)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING.md document.
• All new and existing tests passed.

[sxa]

I'm in two minds about whether it's worth referencing the snap repo explicitly (mostly because a list of potential other repositories need to be updated) but I'm also ok if you want to leave it in.

[MikeMcC399]

I'm in two minds about whether it's worth referencing the snap repo explicitly (mostly because a list of potential other repositories need to be updated) but I'm also ok if you want to leave it in.

Thanks for the feedback! I've removed the reference to snap.

I also squashed the change, because this repo seems to merge PRs as-is rather than squash commits.

[MikeMcC399]

Preview

• https://github.com/MikeMcC399/docker-node/blob/add-slack-links/CONTRIBUTING.md#discussion-areas

[sxa]

I also squashed the change, because this repo seems to merge PRs as-is rather than squash commits.

Hmmm yes I don't get an option to "squash and merge" automatically in this repo so that's appreciated. Thanks.