doc: move changelog to the unreleased section.

Author: aignas

CHANGELOG.md

@@ -42,6 +42,10 @@ BEGIN_UNRELEASED_TEMPLATE
 ### Fixed
 * (gazelle) Remove {obj}`py_binary` targets with invalid `srcs`. This includes files
   that are not generated or regular files.
+* (runfiles) Fix incorrect Python runfiles path assumption - the existing
+  implementation assumes that it is always four levels below the runfiles
+  directory, leading to incorrect path checks
+  ([#3085](https://github.com/bazel-contrib/rules_python/issues/3085)).
 
 {#v0-0-0-added}
 ### Added
@@ -253,10 +257,6 @@ END_UNRELEASED_TEMPLATE
   package targeting different target platforms.
   ([#2797](https://github.com/bazel-contrib/rules_python/issues/2797)).
 * (py_wheel) Add directories in deterministic order.
-* (runfiles) Fix incorrect Python runfiles path assumption - the existing
-  implementation assumes that it is always four levels below the runfiles
-  directory, leading to incorrect path checks
-  ([#3085](https://github.com/bazel-contrib/rules_python/issues/3085)).
 
 {#v1-6-0-added}
 ### Added