multi: forward SendCoins call over RPC

rpcserver.go

@@ -1037,7 +1037,7 @@ func (r *rpcServer) sendCoinsOnChain(paymentMap map[string]int64,
 		return nil, err
 	}
 
-	// If that checks out, we're failry confident that creating sending to
+	// If that checks out, we're fairly confident that creating sending to
 	// these outputs will keep the wallet balance above the reserve.
 	tx, err := r.server.cc.Wallet.SendOutputs(
 		outputs, feeRate, minConfs, label,