fixup! annotations: publish, subscribe, summary and type

Author: mschristensen

src/pages/docs/messages/annotations.mdx

@@ -34,17 +34,17 @@ Annotations are a special type of message with the following properties:
 
 | Property | Description |
 | -------- | ----------- |
-| id | An Ably-generated ID used to uniquely identify the message. |
+| id | An Ably-generated ID used to uniquely identify the annotation. |
 | action | The action specifies whether this is an annotation being added (`annotation.create`) or removed (`annotation.delete`). See [subscribing to annotation updates](#subscribe). | 
-| serial | This message's unique serial (lexicographically totally ordered). |
+| serial | This annotation's unique serial (lexicographically totally ordered). |
 | messageSerial | The serial of the message that this annotation is annotating. |
 | type | The [annotation type](#annotation-types). |
 | name | The name of the annotation, used by some summarization methods for aggregation. See [annotation summaries](#annotation-summaries). |
 | clientId | The client identifier of the user that published this annotation. |
 | count | An optional count, only relevant to certain summarization methods. See [annotation summaries](#annotation-summaries) for more information. |
 | data | An optional payload for the annotation. Available on an [individual annotation](#subscribe-individual-annotations) but not aggregated or included in [annotation summaries](#annotation-summaries). |
-| encoding | This is typically empty, as all messages received from Ably are automatically decoded client-side using this value. However, if the message encoding cannot be processed, this attribute contains the remaining transformations not applied to the `data` payload. |
-| timestamp | The timestamp of when the message was received by Ably, as milliseconds since the Unix epoch. |
+| encoding | This is typically empty, as all annotations received from Ably are automatically decoded client-side using this value. However, if the annotation encoding cannot be processed, this attribute contains the remaining transformations not applied to the `data` payload. |
+| timestamp | The timestamp of when the annotation was received by Ably, as milliseconds since the Unix epoch. |
 
 
 ## Publishing annotations <a id="publish" />