Add htmlize to config.org

.emacs.d/config.org

@@ -1,3 +1,4 @@
+#+SETUPFILE: https://fniessen.github.io/org-html-themes/setup/theme-readtheorg.setup
 #+STARTUP: overview
 #+TITLE: Ricemacs, an Emacs Configuration
 #+AUTHOR: Riyyi
@@ -273,6 +274,12 @@ Irony requires M-x =irony-install-server=.
 	:after yasnippet)
 #+END_SRC
 
+*** Htmlize
+
+#+BEGIN_SRC emacs-lisp
+  (use-package htmlize)
+#+END_SRC
+
 *** Prettify
 
 #+BEGIN_SRC emacs-lisp