Fix link to SWIM paper
Fix link to SWIM paper

uber-node/ringpop-node,esatterwhite/skyring,tomasdiez/ringpop,uber/ringpop-node,uber/ringpop-node,uber/ringpop,hotrannam/ringpop,hj3938/ringpop,esatterwhite/skyring,Collin-V/ringpop,uber-node/ringpop-node,sasa233/ringpop