Typo in Stepper navigation link URL

[codomposer]

Description

The Stepper navigation item in the sidebar has a typo in its documentation URL, resulting in a broken link (404 error).

Location

File: src/_nav.js
Line: 357

Problem

The URL for the Stepper component documentation contains a typo:

{
  component: CNavItem,
  name: (
    <React.Fragment>
      {'Stepper'}
      <CIcon icon={cilExternalLink} size="sm" className="ms-2" />
    </React.Fragment>
  ),
  href: '[https://coreui.io/react/docs/forms/stepp/'](https://coreui.io/react/docs/forms/stepp/'),  // Missing 'er'
  badge: {
    color: 'danger',
    text: 'PRO',
  },
}