Update src/connections/sources/catalog/libraries/mobile/swift-ios/index.md

Author: stayseesong

src/connections/sources/catalog/libraries/mobile/swift-ios/index.md

@@ -187,7 +187,7 @@ analytics.group(groupId: "user-123", traits: MyTraits(
 {% endcodeexample %}
 
 ### Alias
-The [Alias](/docs/connections/spec/alias/) method is used to merge two user identities, effectively connecting two sets of user data as one. When this method is called the `newId` value will overwrite the old userId. If no userId is currently set, the `newId` will be associated with future events as the userId. This is an advanced method and may not be supported across the entire destination catalog, please refer to the destination docs to understand if this method is supported or not.
+The [Alias](/docs/connections/spec/alias/) method is used to merge two user identities, effectively connecting two sets of user data as one. When this method is called, the `newId` value overwrites the old `userId`. If no `userId` is currently set, the `newId` associates with future events as the `userId`. This is an advanced method and may not be supported across the entire destination catalog. 
 
 {% codeexample %}
 {% codeexampletab Method signature %}