docs: update README with new plot paths
docs: update README with new plot paths

This patch updates the README.md file to point to the new plot paths
(results/ instead of doc/analysis/imgs/).

Signed-off-by: Renato Lui Geh <6f991c0560e5a20ed79f442e86dbd5a61a5f5796@gmail.com>

RenatoGeh/gospn,RenatoGeh/gospn,RenatoGeh/gospn