Add workaround for serviceID for reosurcekey

website/docs/r/resource_key.html.markdown

@@ -29,6 +29,35 @@ resource "ibm_resource_key" "resourceKey" {
   }
 }
 ```
+**Note** The current `ibm_resource_key` resource doesn't have support for service_id argument but the service_id can be passesd as one of the parameter.
+
+## Example Usage with serviceID 
+
+```hcl
+data "ibm_resource_instance" "resource_instance" {
+  name = "myobjectsotrage"
+}
+
+resource "ibm_iam_service_id" "serviceID" {
+  name        = "test"
+  description = "New ServiceID"
+}
+
+resource "ibm_resource_key" "resourceKey" {
+  name                 = "myobjectkey"
+  role                 = "Viewer"
+  resource_instance_id = "${data.ibm_resource_instance.resource_instance.id}"
+  parameters = {
+    "serviceid_crn" = "${ibm_iam_service_id.serviceID.crn}"
+  }
+
+  //User can increase timeouts
+  timeouts {
+    create = "15m"
+    delete = "15m"
+  }
+}
+```
 
 ## Timeouts