docs(vehicle_interface): update the Vehicle Interface component page

[maxime-clem]

Description

Update the Vehicle Interface component page.

• Match the style of other pages.
• Update the descriptions and message types.

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[github-actions]

Documentation URL: https://autowarefoundation.github.io/autoware-documentation/pr-502/
Modified URLs:

• https://autowarefoundation.github.io/autoware-documentation/pr-502/design/autoware-interfaces/components/vehicle-interface/

[TakaHoribe]

LGTM. thank you!