minor NEWS update for v1.3.7
diff --git a/NEWS b/NEWS
index fa1a223..637bd93 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,7 @@
 fix : performance of dictionary compression for small input < 4 KB at levels 9 and 10
 build: no longer build backtrace by default in release mode; restrict further automatic mode
 build: control backtrace support through build macro BACKTRACE
+misc: added man pages for zstdless and zstdgrep, by @samrussell
 
 v1.3.6
 perf: much faster dictionary builder, by @jenniferliu