[Bug Report] divider.d.ts seems not updated

### Element UI version
2.15.7

### OS/Browsers version
macOS 11.2.3/Chrome 90.0.4430.212

### Vue version
2.6.14

### Reproduction Link
https://github.com/ElemeFE/element/blob/dev/types/divider.d.ts

### Steps to reproduce
1.Props `vertical` and `posiiton` are provided in `divider.d.ts`

2.Component `ElDivider` doesn't have these above two props

3.`ElDivider` has other two props but aren't provided in `divider.d.ts`

### What is Expected?
`divider.d.ts` should match `ElDivider`

### What is actually happening?
`divider.d.ts` doesn't match `ElDivider`