chore: update changeset with more information (#7955)

Author: petebacondarwin

.changeset/poor-rabbits-compete.md

@@ -2,4 +2,6 @@
 "@cloudflare/unenv-preset": patch
 ---
 
-Remove clearImmediate and setImmediate injects
+Remove `clearImmediate()` and `setImmediate()` injects
+
+These globals are now available in workerd (as of [v1.20240815 - cloudflare/workerd@f07cd8e](https://github.com/cloudflare/workerd/commit/f07cd8e40f53f1607fb1502916a7fe1f9f2b2862)).