13.2R notes: reword 'now has a -r option'

If the word "a" precedes a phrase that begins with a hyphen or dash
followed by a vowel sound, a speaker might:

* mispronounce the word as "an"
* omit the hyphen/dash part of the phrase.

In cases such as this, consider alternative wording.

Approved by:           karels
Differential revision: https://reviews.freebsd.org/D39147

website/content/en/releases/13.2R/relnotes.adoc

@@ -163,7 +163,7 @@ The `tcp_log_bucket` UMA zone has been renamed to `tcp_log_id_bucket`, and `tcp_
 Sysctl variables with `(LEGACY)` in their descriptions are no longer being exported, these are used by ZFS sysctls that have been replaced by others, many of which alias to the same Prometheus metric name (like `vfs.zfs.arc_max` and `vfs.zfs.arc.max`).
 gitref:e4f508d5a211[repository=src] (Sponsored by Axcient)
 
-The man:uuidgen[1] utility now has a `-r` option to generate a random UUID, version 4.
+The man:uuidgen[1] utility has a new option `-r` to generate a random UUID, version 4.
 gitref:8fd1953b7eb2[repository=src]
 
 When invoked by man:inetd[8], `ctlstat -P` will now produce output suitable for ingestion into Prometheus; see man:ctlstat[8].