Update draft-ietf-quic-recovery.md

draft-ietf-quic-recovery.md

@@ -491,7 +491,7 @@ in TCP and are expected to be at least as useful in QUIC.
 Once a later packet within the same packet number space has been acknowledged,
 an endpoint SHOULD declare an earlier packet lost if it was sent a threshold
 amount of time in the past. To avoid declaring packets as lost too early, this
-time threshold MUST be set to at least the local timer granularity, as
+time threshold MUST be set to be at least the local timer granularity, as
 indicated by the kGranularity constant.  The time threshold is:
 
 ~~~