Backport PR #24999 on branch v3.7.x (DOC: figure explanation)#25066

QuLogic merged 1 commit intomatplotlib:v3.7.xmatplotlib/matplotlib:v3.7.xfrom

meeseeksmachine:auto-backport-of-pr-24999-on-v3.7.xmeeseeksmachine/matplotlib:auto-backport-of-pr-24999-on-v3.7.xCopy head branch name to clipboard