Add ack extension to components.md

Author: crobert-1

docs/components.md

@@ -109,21 +109,22 @@ The distribution offers support for the following components.
 
 <div>
 
-| Extensions                                                                                                                          | Stability  |
-|:------------------------------------------------------------------------------------------------------------------------------------|:-----------|
-| [basicauth](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/basicauthextension)               | [beta]     |
-| [docker_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/dockerobserver)    | [beta]     |
-| [ecs_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/ecsobserver)          | [beta]     |
-| [ecs_task_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/ecstaskobserver) | [beta]     |
-| [healthcheck](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/healthcheckextension)           | [beta]     |
-| [httpforwarder](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/httpforwarderextension)       | [beta]     |
-| [host_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/hostobserver)        | [beta]     |
-| [k8s_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/k8sobserver)          | [beta]     |
-| [pprof](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/pprofextension)                       | [beta]     |
-| [smartagent](../pkg/extension/smartagentextension)                                                                                  | [beta]     |
-| [zpages](https://github.com/open-telemetry/opentelemetry-collector/tree/main/extension/zpagesextension)                             | [beta]     |
-| [file_storage](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/storage/filestorage)           | [beta]     |
-| [ballast](https://github.com/open-telemetry/opentelemetry-collector/tree/main/extension/ballastextension)                           | [beta]     |
+| Extensions                                                                                                                          | Stability |
+|:------------------------------------------------------------------------------------------------------------------------------------|:----------|
+| [ack](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/ackextension)                           | [alpha]   |
+| [basicauth](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/basicauthextension)               | [beta]    |
+| [docker_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/dockerobserver)    | [beta]    |
+| [ecs_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/ecsobserver)          | [beta]    |
+| [ecs_task_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/ecstaskobserver) | [beta]    |
+| [healthcheck](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/healthcheckextension)           | [beta]    |
+| [httpforwarder](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/httpforwarderextension)       | [beta]    |
+| [host_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/hostobserver)        | [beta]    |
+| [k8s_observer](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/observer/k8sobserver)          | [beta]    |
+| [pprof](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/pprofextension)                       | [beta]    |
+| [smartagent](../pkg/extension/smartagentextension)                                                                                  | [beta]    |
+| [zpages](https://github.com/open-telemetry/opentelemetry-collector/tree/main/extension/zpagesextension)                             | [beta]    |
+| [file_storage](https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/storage/filestorage)           | [beta]    |
+| [ballast](https://github.com/open-telemetry/opentelemetry-collector/tree/main/extension/ballastextension)                           | [beta]    |
 
 </div>