Update type of owningTenantId to Guid

Author: JarbasHorst

api-reference/beta/resources/security-teamsmessageevidence.md

@@ -34,8 +34,8 @@ Inherits from [alertEvidence](../resources/security-alertevidence.md).
 |  isOwned     | Boolean | Indicates whether the message is owned by your organization.  |
 |  lastModifiedDateTime  | DateTimeOffset | Date and time when the message was last edited. The Timestamp type represents date and time information using ISO 8601 format and is always in UTC. For example, midnight UTC on Jan 1, 2014 is `2014-01-01T00:00:00Z`. |
 |  messageDirection | microsoft.graph.security.antispamTeamsDirection | The direction of the Teams message. |
-|  messageId   | String  | Message identifier unique within the thread. |
-|  owningTenantId   | String  | Tenant ID (GUID) of the owner of the message.  |
+|  messageId   | String  | The message identifier, unique within the thread. |
+|  owningTenantId   | Guid  | Tenant ID (GUID) of the owner of the message.  |
 |  parentMessageId  | String  | Identifier of the message to which the current message is a reply; otherwise, it's the same as the **messageId**.  |
 |  receivedDateTime | DateTimeOffset | The received date of this message. The Timestamp type represents date and time information using ISO 8601 format and is always in UTC. For example, midnight UTC on Jan 1, 2014 is `2014-01-01T00:00:00Z`.  |
 |  recipients  | String collection | The recipients of this Teams message.    |
@@ -80,7 +80,7 @@ The following JSON representation shows the resource type.
   "lastModifiedDateTime": "String (timestamp)",
   "messageDirection": "String",
   "messageId": "String",
-  "owningTenantId": "String",
+  "owningTenantId": "Guid",
   "parentMessageId": "String",
   "receivedDateTime": "String (timestamp)",
   "recipients": ["String"],