Update website footer to new LF Projects Series LLC trademark disclaimer

## Summary

Hi everyone! My name is Uche, a member of the projects team here at the CNCF. We noticed this project has been converted to a **Series of LF Projects, LLC**.
We need to update the project website footer to include the new Linux Foundation projects trademark disclaimer.

## Required Footer Content

The footer must follow the correct format as listed on the [CNCF's website guideline](https://github.com/cncf/foundation/blob/main/policies-guidance/website-guidelines.md). The footer must include trademark guidelines and a copyright notice (where XYZ is the project's name):

> Copyright XYZ a Series of LF Projects, LLC
For website terms of use, trademark policy and other project policies please see https://lfprojects.org/policies/.

## Acceptance Criteria

- [ ] Footer links to LF Projects policies
- [ ] Footer includes **“A Series of LF Projects, LLC”** wording
- [ ] Update is deployed to the public website

**Reference:** https://lfprojects.org/policies/

Thank you!