Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

• https://stackblitz.com/edit/nuxt-starter-5yzorc?file=README.md
• check the HTML of the img
• transformer prop is rendered as an attribute

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
related : nuxt-modules/cloudinary#181