NEWS.md: sub/3 and gsub

Mention jqlang#2641

NEWS.md

@@ -170,12 +170,13 @@ Full commit log can be found at https://github.com/jqlang/jq/compare/jq-1.6...jq
 - Fix `stderr/0` to output raw text without any decoration. @itchyny #2751
 - Fix `nth/2` to emit empty on index out of range. @itchyny #2674
 - Fix `implode` to not assert and instead replace invalid unicode codepoints. @wader #2646
-- Simpler and faster `transpose`. @pkoppstein #2758
 - Allow keywords to be used as binding name in more places. @emanuele6 #2681
 - Allow using `nan` as NaN in JSON. @emanuele6 #2712
 - Fix indices/1 and rindex/1 in case of overlapping matches in strings. @emanuele6 #2718
 - Enable `significand/0`, `gamma/0` and `drem/2` on macOS. @itchyny #2756 #2775
 - Fix segfault when using libjq and threads. @thalman #2546
+- Fix sub/3 to resolve issues involving global search-and-replace (gsub) operations. @pkoppstein #2641 
+- Simpler and faster `transpose`. @pkoppstein #2758 
 
 # Previous releases