fix: Use the correct fields in the documentation of ovh_vrack_cloudproject import

[amstuta]

Description

Fixes #618

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Improvement (improve existing resource(s) or datasource(s))
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] Documentation update