-checkout](http://git.notmuchmail.org/git/notmuch) or a [source
-release](http://notmuchmail.org/releases/), Notmuch Emacs is included by
+checkout](https://git.notmuchmail.org/git/notmuch) or a [source
+release](https://notmuchmail.org/releases/), Notmuch Emacs is included by