Update outdated emacs-lisp link

f6098f9e · Victor Felder · 4a04cd82 · f6098f9e
隐藏空白更改
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free-programming-books.md free-programming-books.md +1 -1

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 ###Emacs

 * [GNU Emacs Manual, 16th Edition, v. 22](http://shop.fsf.org/product/gnu-emacs-manual-16th-edition/)
-* [An Introduction to Programming in Emacs Lisp, 3rd Edition](http://www.gnu.org/software/emacs/emacs-lisp-intro/)
+* [An Introduction to Programming in Emacs Lisp, 3rd Edition](https://www.gnu.org/software/emacs/manual/html_node/eintr/index.html)


 ###Erlang