add config-dir variable and change load-path to use it

settings/my-settings.el

@@ -2,18 +2,18 @@
 ;;; Commentary:
 ;;; Code:
 (use-package my
-  :load-path "lisp/my"
+  :load-path (lambda() (concat config-dir "lisp/my"))
   :config
   (with-eval-after-load 'org
     (add-hook 'org-mode-hook 'my-org-link-color-hook)
     (add-hook 'org-ctrl-c-ctrl-c-hook 'my-org-table-cell-color-attr)))
 
 (use-package my-org-article
-  :load-path "lisp/my"
+  :load-path (lambda() (concat config-dir "lisp/my"))
   :after (org))
 
 (use-package my-org-letter
-  :load-path "lisp/my"
+  :load-path (lambda() (concat config-dir "lisp/my"))
   :after (org))
 
 (provide 'my-settings)