fix org bug

init.el

@@ -98,6 +98,7 @@
   (require-package 'org2ctex)
   (require-package 'org-autolist)
   (require-package 'org-plus-contrib)
+  (require-package 'org-ac)
   
   (add-to-list 'auto-mode-alist '("\\.org\\'" . org-mode))
   (add-hook 'org-mode-hook 'turn-on-font-lock)