docs: Use /usr/bin/env sh instead of direct path (#1020)

Co-authored-by: nathandao <[email protected]>

Author: nathandao

.husky/pre-commit

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env sh
 . "$(dirname "$0")/_/husky.sh"
 
 node bin/lint-staged.js

README.md

@@ -369,7 +369,7 @@ All examples assume you've already set up lint-staged in the `package.json` file
 In `.husky/pre-commit`
 
 ```shell
-#!/bin/sh
+#!/usr/bin/env sh
 . "$(dirname "$0")/_/husky.sh"
 
 npx lint-staged