docs: Update documentation for husky 1.0

[typicode]

Hi 👋

I've just released husky 1.0 (it was behind a flag for the past months). This PR updates examples to match the new way to add hooks. It also solves the issue with commitizen 👍

[codecov]

Codecov Report

Merging #496 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #496   +/-   ##
=======================================
  Coverage   97.94%   97.94%           
=======================================
  Files          12       12           
  Lines         243      243           
  Branches       29       29           
=======================================
  Hits          238      238           
  Misses          5        5

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[sudo-suhas]

Thank you @typicode for your work on husky and this PR here. We appreciate it!

[okonet]

Thank you ☺️

[typicode]

Thanks for lint-staged, it's super cool :)