Fix dsmr_reader peak hour consumption unit of measurement

[Glodenox]

Proposed change

I accidentally used kWh as unit of measurement for the quarter peak usage, while it should be kW. The value doesn't represent the energy consumed over time, but an average of how much is being consumed within a quarter. DSMR Reader and the telegram data in the energy meter also use kW as unit of measurement for this data, so it makes most sense to also use this here.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR is related to issue: DSMR_Reader: not creating sensors for mqtt topic 'dsmr/consumption/quarter-hour-peak-electricity' #83999
• This PR fixes an issue created in PR Add quarter-hour peak consumption sensors #84271

Checklist

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[home-assistant]

Hey there @depl0y, mind taking a look at this pull request as it has been labeled with an integration (dsmr_reader) you are listed as a code owner for? Thanks!

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[frenck]

Thanks, @Glodenox 👍

../Frenck