Update docs/technical-details/reference/resource-migration.md

Co-authored-by: Chris Barber <[email protected]>

Author: kriszyp

docs/technical-details/reference/resource-migration.md

@@ -7,7 +7,7 @@ The updated Resource API is enabled on a per-class basis by setting static `load
 * When instance methods are called, there will not be any record preloaded beforehand and the resource instance will not have properties mapped to a record.
 * All instance methods accept a `target`, an instance of `RequestTarget`, as the first argument, which identifies the target record or query.
 	* The `target` will have an `id` property identifying the target resource, along with target information.
-	* The `getId()` method is not required and will return `undefined`.
+	* The `getId()` method is no longer used and will return `undefined`.
 	* The `target` will provide access to query parameters, search operators, and other directives.
 	* A `target` property of `checkPermission` indicates that a method should check the permission before of request before proceeding. The default instance methods provide the default authorization behavior.
 		* This supplants the need for `allowRead`, `allowUpdate`, `allowCreate`, and `allowDelete` methods, which shouldn't need to be used (and don't provide the id of the target record).