Fix spelling in smhi strings

[gjohansson-ST]

Proposed change

Fixes strings in smhi
#153224 (comment)

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
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• New feature (which adds functionality to an existing integration)
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Additional information

• This PR fixes or closes issue: fixes #
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[Copilot]

Pull Request Overview

This PR corrects spelling and grammar errors in the SMHI integration's string translations for fuel drying state descriptions.

Key changes:

• Fixed typo "Extemely" to "Extremely"
• Improved grammar from "Moderate wet" to "Moderately wet"