Resolve "Update docs for v1.16.0"

Description

Update docs for v1.16.0

Related issues/MRs

Closes #1974 (closed)
Related MRs: !575 (merged), !584 (merged), !596 (merged), !600 (merged), !603 (merged), !605 (merged), !606 (merged), !607 (merged), !622 (merged), !623 (merged), !626 (merged), !627 (merged), !636 (merged), !638 (merged), !639 (merged), !640 (merged), !643 (merged), !646 (merged), !647 (merged), !650 (merged), !651 (merged), !652 (merged), !657 (merged), !659 (merged), !660 (merged), !667 (merged), !668 (merged), !670 (merged), !673 (merged)

Notes to review