Audit and update existing website content.

[edonehoo]

Audit the PF website to review and update content across all pages. Update any information that is outdated, correct any styling issues, and add missing content. Make note of any opportunities to enhance the website experience with new or improved features.

### Tasks
- [ ] https://github.com/patternfly/patternfly-org/issues/3623
- [ ] https://github.com/patternfly/patternfly-org/issues/3649
- [ ] https://github.com/patternfly/patternfly-org/issues/3650
- [ ] https://github.com/patternfly/patternfly-org/issues/3695
- [ ] Review and update Patterns
- [ ] Review and update Charts
- [ ] https://github.com/patternfly/patternfly-org/issues/3949
- [ ] Review and update Layouts
- [ ] Review and update Utility classes
- [ ] Review and update Developer resources
- [ ] Review and update Training pages

[edonehoo]

Tracking this audit in Google Sheets.