docs(hover): updated deprecated syntax in example text (#12960)
docs(hover): updated deprecated syntax in example text (#12960)

The old syntax was deprecated with Vue 2.6. The examples all show the new syntax `v-slot="{ hover }"`. Update the text to match the examples
vuetifyjs/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify