Revisions to Home page of LF AI & Data wiki

[NSouthernLF]

https://lf-aidata.atlassian.net/wiki/spaces/DL/overview?mode=global

Zoom links need to be checked and possibly updated for accuracy. MLOps committee, once it relaunches, needs a label and a zoom link, day and time and cadence, etc. Committee Chairs also need to be updated - Outreach should be Susan Kahler. Also: LF AI & Data's calendar as a broad foundation needs to be interpolated from PCC. Delete ML Security Committee - this no longer exists.

[NSouthernLF]

Katherine Druckman (Intel), Nick Chase (Cloud Geometry) and Adam Miller (Red Hat) are the three leads. ML Security - Matt Rutkowski (IBM) is the new chair cadence TBD no active link or regular date/time now - this will be announced.