SOL002_48: Subscriptions GET response body description updated

src/SOL002/VNFPerformanceManagement/VNFPerformanceManagement.yaml

@@ -703,8 +703,11 @@ paths:
             OK
 
             The list of subscriptions was queried successfully.
-            The response body shall contain the representations of all active
-            subscriptions of the functional block that invokes the method.
+            The response body shall contain in an array the representations
+            of all active subscriptions of the functional block that invokes the method,
+            i.e. zero or more representations of PM subscriptions as defined in clause 6.5.2.3.
+            If the VNFM supports alternative 2 (paging) according to clause 4.7.2.1 for this resource,
+            inclusion of the Link HTTP header in this response shall follow the provisions in clause 4.7.2.3.
           headers:
             Content-Type:
               description: >