fix: update incorrect changeset (#5995)

## 📄 Description

Update incorrectly formatted changeset.

---

## 📝 Checklist

- ✅ My code follows the style guidelines of this project
- 🛠️ I have performed a self-review of my own code
- 📄 I have made corresponding changes to the documentation
- ⚠️ My changes generate no new warnings or errors
- 🧪 I have added tests that prove my fix is effective or that my feature
works
- ✔️ New and existing unit tests pass locally with my changes

Author: alizedebray

.changeset/tall-cougars-remain.md

@@ -3,6 +3,7 @@
 ---
 
 Renamed the following CSS custom properties:
+
 - `--post-global-header-height` → `--post-global-header-expanded-height`
 - `--post-local-header-height` → `--post-local-header-expanded-height`
 - `--post-local-header-min-height` → `--post-local-header-expanded-min-height`