Update RELEASE_NOTES.md

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: SteveCInVA

RELEASE_NOTES.md

@@ -9,7 +9,7 @@
     *   Fixed issue where Admin Plugins modal would fail to load when using sidenav navigation.
     *   **Root Cause**: JavaScript code attempted to access DOM elements that didn't exist in sidenav navigation.
     *   **Solution**: Corrected DOM element checks to ensure compatibility with both top-nav and sidenav layouts.
-    *   **User Experience**: Admins can now access the Plugins modal reglardless of navigation style.
+    *   **User Experience**: Admins can now access the Plugins modal regardless of navigation style.
     *   (Ref: `admin_plugins.js`, DOM existence checks)
 
 ### **(v0.229.062)**