Update README.md

Author: jamescherti

README.md

@@ -973,7 +973,7 @@ The `auto-package-update` package that automates the process of updating install
 To configure **auto-package-update**, add the following to `~/.emacs.d/post-init.el`:
 
 ```elisp
-;; This automates the process of updating installed packages managed by *package.el*
+;; This automates the process of updating installed packages
 (use-package auto-package-update
   :ensure t
   :custom
@@ -987,7 +987,9 @@ To configure **auto-package-update**, add the following to `~/.emacs.d/post-init
   (auto-package-update-hide-results t)
 
   ;; Automatically delete old package versions after updates to reduce disk
-  ;; usage and keep the package directory clean.
+  ;; usage and keep the package directory clean. This prevents the accumulation
+  ;; of outdated files in Emacs’s package directory, which consume
+  ;; unnecessary disk space over time.
   (auto-package-update-delete-old-versions t)
 
   ;; Uncomment the following line to enable a confirmation prompt