reference known issue with muli master config

Author: aojea

keps/sig-network/1880-multiple-service-cidrs/README.md

@@ -244,7 +244,7 @@ This default IP family is used in cases where a Service creation doesn't provide
 the Service to Single Stack with an IP chosen from the default IP family defined.
 
 The current implementation doesn't guarantee consistency for Service IP ranges and default IP families across
-multiple apiservers.
+multiple apiservers, see https://github.com/kubernetes/kubernetes/issues/114743.
 
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