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 the Kubernetes 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. 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!