Fixed types props

[yudppp]

It seems that you forgot to modify type/index.d.ts when doing this issue (#21)

I want to use display property in TypeScript.

[codecov-io]

Codecov Report

Merging #44 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #44   +/-   ##
=======================================
  Coverage   96.87%   96.87%           
=======================================
  Files           1        1           
  Lines          32       32           
=======================================
  Hits           31       31           
  Misses          1        1

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[yudppp]

Thanks🍝