The description of "Global Properties" was incorrect

[WangZhenHao]

https://skirtles-code.github.io/vue-examples/patterns/global-properties.html

This article say that
the lack of availability in setup is a major problem, so let's consider some other alternatives to globalProperties.

This statement has a mistake. we can use getCurrentInstance method to get the gobal properties.

`
import { ref, getCurrentInstance } from 'vue';

const { proxy } = getCurrentInstance();
`

vuejs/core#2233