docs: fix typo in v-list-item active prop description

[chilin0525]

Description

Fix typo in https://vuetifyjs.com/en/api/v-list-item/#props-active.
Currently:

Controls the active state of the item. This is typically used to highlight the component,

Expected:

Controls the active state of the item. This is typically used to highlight the component.

This is my first PR for Vuetify, hoping I follow the contributing correctly. Thank you.🙏

Markup:

None