docs: retrospectively add prometheus counter suffix change (#2950)
docs: retrospectively add prometheus counter suffix change (#2950)

Co-authored-by: Daniel Dyla <48863ceabe0ab1a7b5d0d98f28b1aacaac86b73d@users.noreply.github.com>
Co-authored-by: Valentin Marchaud <1a73af9e7ae00182733b2292511b814be66f065f@vmarchaud.fr>
open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js,open-telemetry/opentelemetry-js