Update spec/asyncapi.md

Co-authored-by: Fran Méndez <[email protected]>

spec/asyncapi.md

@@ -830,7 +830,7 @@ Describes a specific operation.
 Field Name | Type | Description
 ---|:---:|---
 <a name="operationObjectAction"></a>action | `"send"` &#124; `"receive"` | **Required**. Use `send` when it's expected that the application will send a message to the given [`channel`](#operationObjectChannel), and `receive` when the application should expect receiving messages from the given [`channel`](#operationObjectChannel).
-<a name="operationObjectChannel"></a>channel | [Reference Object](#referenceObject) | **Required**. A `$ref` pointer to the definition of the channel in which this operation is performed. If the operation is located in the [root Channels Object](#channelsObject), it MUST point to a channel definition located in the [root Channels Object](#channelsObject), and MUST NOT point to a channel definition located in the [Components Object](#componentsObject). If the operation is located in the [Components Object](#componentsObject), it MAY additionally point to a channel definition located in the [Components Object](#componentsObject). Please note the `channel` property value MUST be a [Reference Object](#referenceObject) and, therefore, MUST NOT contain a [Channel Object](#channelObject). However, it is RECOMMENDED that parsers (or other software) dereference this property for a better development experience.
+<a name="operationObjectChannel"></a>channel | [Reference Object](#referenceObject) | **Required**. A `$ref` pointer to the definition of the channel in which this operation is performed. If the operation is located in the [root Operations Object](#operationsObject), it MUST point to a channel definition located in the [root Channels Object](#channelsObject), and MUST NOT point to a channel definition located in the [Components Object](#componentsObject) or anywhere else. If the operation is located in the [Components Object](#componentsObject), it MAY point to a [Channel Object](#channelObject) in any location. Please note the `channel` property value MUST be a [Reference Object](#referenceObject) and, therefore, MUST NOT contain a [Channel Object](#channelObject). However, it is RECOMMENDED that parsers (or other software) dereference this property for a better development experience.
 <a name="operationObjectTitle"></a>title | `string` | A human-friendly title for the operation.
 <a name="operationObjectSummary"></a>summary | `string` | A short summary of what the operation is about.
 <a name="operationObjectDescription"></a>description | `string` | A verbose explanation of the operation. [CommonMark syntax](http://spec.commonmark.org/) can be used for rich text representation.