minor english

draft-ietf-quic-recovery.md

@@ -439,7 +439,7 @@ implementations SHOULD NOT use a packet threshold less than 3; see {{?RFC5681}}.
 Some networks may exhibit higher degrees of packet reordering, causing a sender
 to detect spurious losses. Additionally, packet reordering could be more common
 with QUIC than TCP, because network elements that could observe and fix the
-order of reordered TCP packets cannot do it with QUIC. Algorithms that increase
+order of reordered TCP packets cannot do that for QUIC. Algorithms that increase
 the reordering threshold after spuriously detecting losses, such as RACK
 {{?RACK}}, have proven to be useful in TCP and are expected to at least as
 useful in QUIC.