Update NEWS.md

Co-Authored-By: Lyndon White <[email protected]>

Author: nickrobinson251

NEWS.md

@@ -25,15 +25,13 @@ New library functions
 * The `tempname` function now takes an optional `parent::AbstractString` argument to give it a directory in which to attempt to produce a temporary path name ([#33090]).
 * The `tempname` function now takes a `cleanup::Bool` keyword argument defaulting to `true`, which causes the process to try to ensure that any file or directory at the path returned by `tempname` is deleted upon process exit ([#33090]).
 * The `readdir` function now takes a `join::Bool` keyword argument defaulting to `false`, which when set causes `readdir` to join its directory argument with each listed name ([#33113]).
-
+* The new `only(x)` function returns the one-and-only element of a collection `x`, and throws an `ArgumentError` if `x` contains zero or multiple elements. ([#33129])
 
 Standard library changes
 ------------------------
 
 * The methods of `mktemp` and `mktempdir` which take a function body to pass temporary paths to no longer throw errors if the path is already deleted when the function body returns ([#33091]).
 
-* New function `only(x)` returns the one-and-only element of a collection `x`, and throws an error if `x` contains zero or multiple elements.
-
 #### Libdl
 
 #### LinearAlgebra