explicit example in NEWS

MichaelChirico · web-flow · commit e531e505094e · 2024-01-12T08:39:49.000-08:00
diff --git a/NEWS.md b/NEWS.md
@@ -22,7 +22,7 @@
 
 3. data.table now depends on R 3.2.0 (2015) instead of 3.1.0 (2014). 1.17.0 will likely move to R 3.3.0 (2016). Recent versions of R have good features that we would gradually like to incorporate, and we see next to no usage of these very old versions of R.
 
-4. Erroneous assignment calls in `[` with a trailing comma get a friendlier error since this situation is common during refactoring and easy to miss visually. Thanks @MichaelChirico for the fix.
+4. Erroneous assignment calls in `[` with a trailing comma (e.g. ``DT[, `:=`(a = 1, b = 2,)]``) get a friendlier error since this situation is common during refactoring and easy to miss visually. Thanks @MichaelChirico for the fix.
 
 # data.table [v1.14.99](https://github.com/Rdatatable/data.table/milestone/29)  (in development)
 
