typo, wrong param name

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>

Author: shwstppr

api/src/main/java/org/apache/cloudstack/api/command/admin/vm/ImportUnmanagedInstanceCmd.java

@@ -128,7 +128,7 @@ public class ImportUnmanagedInstanceCmd extends BaseAsyncCmd {
             description = "the ID of the service offering for the virtual machine")
     private Long serviceOfferingId;
 
-    @Parameter(name = ApiConstants.ROOT_DISK_SIZE,
+    @Parameter(name = ApiConstants.ROOT_DISK_ID,
             type = CommandType.STRING,
             description = "the ID of the disk that is to be used as ROOT volume",
             since = "4.16.0")