[fix] vendor/st/nucleo-wl55jc: unit of barometric pressure should be in hPa

[timonburkard]

Summary

Fix: Unit of barometric pressure should be hPa (not Pa) for ST NUCLEO-WL55JC.

Changes

Fixed unit of barometric pressure to be hPa (not Pa) for ST NUCLEO-WL55JC.

Checklist for Reviewers

• Title and description should be descriptive (Not just a serial number for example).
• profileIDs should not be vendorID and should be a unique value for every profile.
• All devices should be listed in the vendor's index.yaml file.
• Firmware versions can not be changed.
• At least 1 image per device and should be transparent.

[CLAassistant]

All committers have signed the CLA.