Fix reference

draft-ietf-quic-transport.md

@@ -5135,10 +5135,10 @@ higher-numbered stream ID is received.  Thus, on a new connection, opening
 stream 2000001 opens 1 million streams, as required by the specification.
 
 The number of active streams is limited by the concurrent stream limit transport
-parameter, as explained in {{stream-concurrency}}.  If chosen judiciously, this
-limit mitigates the effect of the stream commitment attack.  However, setting
-the limit too low could affect performance when applications expect to open
-large number of streams.
+parameter, as explained in {{controlling-concurrency}}.  If chosen judiciously,
+this limit mitigates the effect of the stream commitment attack.  However,
+setting the limit too low could affect performance when applications expect to
+open large number of streams.
 
 ## Explicit Congestion Notification Attacks {#security-ecn}