[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?

[github-actions]

The backport to 9.0 failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-9.0 9.0
# Navigate to the new working tree
cd .worktrees/backport-9.0
# Create a new branch
git switch --create backport-1447-to-9.0
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 e460ed5a37d22124ec4a056edbdae11db8d9e82f
# Push it to GitHub
git push --set-upstream origin backport-1447-to-9.0
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-9.0

Then, create a pull request where the base branch is 9.0 and the compare/head branch is backport-1447-to-9.0.