* Add sigv4 overview and links to AWS docs * minor wording tweak * Update prometheus.md * move supported version in Prometheus-AMP docs Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com> * move supported version Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com> * move version support note Co-authored-by: Diana Payton <52059945+oddlittlebird@users.noreply.github.com>
