Minor edit

Author: msewaweru

api-reference/v1.0/api/security-ediscoveryholdpolicy-post-usersources.md

@@ -47,7 +47,7 @@ You can specify the following properties when you create a **userSource**.
 |Property|Type|Description|
 |:---|:---|:---|
 |email|String|SMTP address of the user.|
-|includedSources|microsoft.graph.security.sourceType|Specifies which sources are included in this group. The possible values are: `mailbox`.  Only `mailbox` is applicable for user sources.|
+|includedSources|microsoft.graph.security.sourceType|Specifies which sources are included in this group. The possible values are: `mailbox`. Only `mailbox` is applicable for user sources.|
 
 
 ## Response