Use kilobytes as plural

draft-ietf-core-dns-over-coap.md

@@ -96,7 +96,7 @@ Things (IoT), which usually conflicts with the requirements introduced by
 HTTPS.
 Constrained IoT devices may be restricted in memory, power consumption,
 link layer frame sizes, throughput, and latency. They may
-only have a handful kilobyte of both RAM and ROM. They may sleep for long
+only have a handful kilobytes of both RAM and ROM. They may sleep for long
 durations of time, after which they need to refresh the named resources they
 know about. Name resolution in such scenarios must take into account link
 layer frame sizes of only a few hundred bytes, bit rates in the magnitute