don't need only

draft-ietf-quic-transport.md

@@ -3985,7 +3985,7 @@ application data, aggressive increases in probe size carry fewer consequences.
 Streams in QUIC provide a lightweight, ordered byte-stream abstraction.
 
 There are two basic types of stream in QUIC.  Unidirectional streams carry data
-only in one direction: from the initiator of the stream to its peer;
+in one direction: from the initiator of the stream to its peer;
 bidirectional streams allow for data to be sent in both directions.  Different
 stream identifiers are used to distinguish between unidirectional and
 bidirectional streams, as well as to create a separation between streams that