message: docs: syntax highlights in advanced-validation guide
diff: @@ -8,7 +8,7 @@ Some rules validity are dependent on other fields values, a rule like `confirmed
  Rules parameters can be marked as a **field target** by specifying a `isTarget` for that parameters. For example, this is how a basic password confirmation rule would look like:
  -```js
  +```js{6}
  import { extend } from 'vee-validate';
  extend('password', {
  @@ -19,12 +19,19 @@ extend('password', {
  ```
  ```vue{2,10}
  -<ValidationProvider rules="required|password:confirmation" v-slot="{ errors }">
  +<ValidationProvider
  + rules="required|password:confirmation"
  + v-slot="{ errors }"
  +>
  <input v-model="password" type="password">
  <span>{{ errors[0] }}</span>
  </ValidationProvider>
  -<ValidationProvider vid="confirmation" rules="required" v-slot="{ errors }">
  +<ValidationProvider
  + vid="confirmation"
  + rules="required"
  + v-slot="{ errors }"
  +>
  <input v-model="confirm" type="password">
  <span>{{ errors[0] }}</span>
  </ValidationProvider>
  