message: update img path
diff: @@ -10,7 +10,7 @@ All [Nhost](https://nhost.io) projects are built on open source software so you
  <div style="text-align:center;">
  <a href="https://nhost.io/register" target="_blank" >
  - <img src="https://github.com/nhost/hasura-backend-plus/raw/master/assets/nhost-register-button.png" width="200px" />
  + <img src="https://github.com/nhost/hasura-backend-plus/raw/master/docs/.vuepress/public/nhost-register-button.png" width="200px" />
  </a>
  </div>
  