Fix changelog

The watcher entry was accidentally added under the v1 changelog.

Author: JamesWrigley

docs/src/_changelog.md

@@ -7,13 +7,15 @@ CurrentModule = DistributedNext
 This documents notable changes in DistributedNext.jl. The format is based on
 [Keep a Changelog](https://keepachangelog.com).
 
-## [v1.0.0] - 2024-12-02
+## Unreleased
 
 ### Added
 - A watcher mechanism has been added to detect when both the Distributed stdlib
   and DistributedNext may be active and adding workers. This should help prevent
   incompatibilities from both libraries being used simultaneously ([#10]).
 
+## [v1.0.0] - 2024-12-02
+
 ### Fixed
 - Fixed behaviour of `isempty(::RemoteChannel)`, which previously had the
   side-effect of taking an element from the channel ([#3]).