Update NEWS.md

Co-Authored-By: timholy <[email protected]>

Author: mbauman

NEWS.md

@@ -25,7 +25,7 @@ Standard library changes
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   * `CartesianIndices` can now be constructed from two `CartesianIndex`es `I` and `J` with `I:J` ([#29440]).
-  * `CartesianIndices` support broadcasting arithmetic (+ and -) with a `CartesianIndex` if the result can be expressed as another `CartesianIndices` ([???]).
+  * `CartesianIndices` support broadcasting arithmetic (+ and -) with a `CartesianIndex` if the result can be expressed as another `CartesianIndices` ([#29890]).
   * `copy!` support for arrays, dicts, and sets has been moved to Base from the Future package ([#29173]).
   * Channels now convert inserted values (like containers) instead of requiring types to match ([#29092]).
   * `range` can accept the stop value as a positional argument, e.g. `range(1,10,step=2)` ([#28708]).