SOL002_47: Thresholds GET response body description updated

src/SOL002/VNFPerformanceManagement/VNFPerformanceManagement.yaml

@@ -451,8 +451,10 @@ paths:
 
             Information about zero or more thresholds was queried
             successfully.
-            The response body shall contain representations of zero
-            or more thresholds.
+            The response body shall contain in an array the representations of zero or more thresholds,
+            as defined in clause 6.5.2.9.
+            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:
             Location:
               description: The resource URI of the created VNF instance