[docs] Add status header for k8sevents receiver (#10464)

* Add status header for k8sevents receiver

* apply reviewer's suggestion

* Update README.md

receiver/k8seventsreceiver/README.md

@@ -1,14 +1,17 @@
 # Kubernetes Events Receiver
 
+| Status                   |           |
+| ------------------------ |-----------|
+| Stability                | [alpha]   |
+| Supported pipeline types | logs      |
+| Distributions            | [contrib] |
+
 The kubernetes Events receiver collects events from the Kubernetes
 API server. It collects all the new or updated events that come in.
 
 Currently this receiver supports authentication via service accounts only.
 See [example](#example) for more information.
 
-> :construction: This receiver is in **BETA**. Configuration fields and
-log data model are subject to change.
-
 ## Configuration
 
 The following settings are optional:
@@ -215,3 +218,6 @@ spec:
             name: otelcontribcol
 EOF
 ```
+
+[beta]: https://github.com/open-telemetry/opentelemetry-collector#alpha
+[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib