[landing] remove ted + jon and add will to team page

Summary:
Update the team landing page to reflect our current team today

Linear task: https://linear.app/comm/issue/ENG-5656/replace-jon-with-will-on-the-landing-page

Test Plan:
Please see the screenshot below

Reviewers: atul, rohan, wyilio

Reviewed By: atul

Subscribers: ashoat, tomek, wyilio

Differential Revision: https://phab.comm.dev/D9831