Balboa spa document update for new temperature range control (Core PR #115285)

[kotope]

Proposed change

Update Balboa spa documentation for new temperature range control

Type of change

• [ ] Spelling, grammar or other readability improvements (current branch).
• [ ] Adjusted missing or incorrect information in the current documentation (current branch).
• [ ] Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • [ ] I've opened up a PR to add logos and icons in Brands repository.
• [x] Added documentation for a new feature I'm adding to Home Assistant (next branch).
• [ ] Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: https://github.com/home-assistant/core/pull/115285
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue: fixes #

Checklist

• [x] This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• [x] The documentation follows the Home Assistant documentation standards.

Link to previous PR that I closed due failure to resolve the target branch change: https://github.com/home-assistant/home-assistant.io/pull/32236

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[kotope]

CI fails on ruby version. Is it just me (and my commit) or is there something wrong with the CI env?

[kotope]

The CI still fails on ruby version. Is there something I need to do @c0ffeeca7 ?

[c0ffeeca7]

The CI still fails on ruby version. Is there something I need to do @c0ffeeca7 ?

No, nothing you can do I don't think. Just wait. I need help on this. But the earliest I could get someone to look into this is next week.