Added link to Canopsis integration amongst alertmanager webhook integrations (#1746)
Added link to Canopsis integration amongst alertmanager webhook integrations (#1746)

Signed-off-by: Mathias Védrines <7eb287b03e8b79ab85e7f900d682a26949d5c655@capensis.fr>

Co-authored-by: Mathias Védrines <7eb287b03e8b79ab85e7f900d682a26949d5c655@capensis.fr>
prometheus/docs,prometheus/docs,prometheus/docs