Update opentelemetry-prometheus/Cargo.toml

Co-authored-by: Utkarsh Umesan Pillai <[email protected]>

Author: cijothomas

opentelemetry-prometheus/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "opentelemetry-prometheus"
 version = "0.29.1"
-description = "Prometheus exporter for OpenTelemetry (discontinued)"
+description = "Prometheus exporter for OpenTelemetry (This crate is discontinued and is no longer maintained)"
 homepage = "https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-prometheus"
 repository = "https://github.com/open-telemetry/opentelemetry-rust/tree/main/opentelemetry-prometheus"
 readme = "README.md"