fix(release): keep changelog header stable

.releaserc.json

@@ -6,7 +6,12 @@
   "plugins": [
     "@semantic-release/commit-analyzer",
     "@semantic-release/release-notes-generator",
-    "@semantic-release/changelog",
+    [
+      "@semantic-release/changelog",
+      {
+        "changelogTitle": "# Changelog\n\nAll notable changes to the `@every-env/compound-plugin` CLI tool will be documented in this file.\n\nThe format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),\nand this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).\n\nRelease numbering now follows the repository `v*` tag line. Starting at `v2.34.0`, the root CLI package and this changelog stay on that shared version stream. Older entries below retain the previous `0.x` CLI numbering."
+      }
+    ],
     "@semantic-release/npm",
     [
       "@semantic-release/git",