[docs] Fix image paths for docs-assembler

[colleenmcginnis]

Fixes image paths to work with docs-assembler.

Notes for the reviewer:

• I was not able to get images in reference, extend, or release-notes to work using the :::{image} syntax because it seems to resolve differently than the Markdown ![]() syntax. We should address this in docs-builder, but in order to get images working as soon as possible, I've used Markdown syntax and left us a TO DO in a code comment to add back the screenshot class where applicable.
• Can you please add the appropriate labels needed for backporting?

[Anaethelion]

LGTM