New parameter "delay" in modbus switch.verify

[janiversen]

Proposed change

Documentation of the new parameter delay in modbus switch.verify as
well as new behaviour of scan_interval.

Remark: this PR depends on PR #17874 being merged first (or both together).

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 logo's and icons in Brands repository.
• 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:
  Allow manual scan and add delay in modbus switch verify core#50974
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue:

Checklist

• 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.
• The documentation follows the Home Assistant documentation standards.

[frenck]

Rebased PR onto the latest current branch.

[frenck]

Thanks! 👍