docs(plugin-list): updates semantic-release-plus/docker with updated …

…lifecycle hook. (#2243)

docs/extending/plugins-list.md

@@ -54,7 +54,8 @@
   - `publish`: Tag the image specified by `name` with the new version, push it to Docker Hub and update the latest tag
 - [@semantic-release-plus/docker](https://github.com/semantic-release-plus/semantic-release-plus/tree/master/packages/plugins/docker)
   - `verifyConditions`: Verify that all needed configuration is present and login to the configured docker registry.
-  - `publish`: Tag the image specified by `name` with the new version, push it to the configured docker registry and update the `latest`, `major`, `minor` tags based on the configuration settings.
+  - `publish`: Tag the image specified by `name` with the new version and channel and push it to the configured docker registry.
+  - `addChannel`: Updates a release published on one channel with the destinations channel tag and pushes to the registry ie: next to latest.
 - [semantic-release-gcr](https://github.com/carlos-cubas/semantic-release-gcr)
   - `verifyConditions`: Verify that all needed configuration is present and login to the Docker registry
   - `publish`: Tag the image specified by `name` with the new version, push it to Docker Hub and update the latest tag