如何在Mac上恢复我的httpd.conf? (OSX 10.12)

I was trying to enable PHP on my Mac, so I just simply followed the steps shown in this website: https://jason.pureconcepts.net/2015/10/install-apache-php-mysql-mac-os-x-el-capitan/

However, when I came to the step below:

vi httpd.conf

I can see the http.conf file, but somehow something went wrong, and I really had no idea. I think I've probably accidentally deleted the httpd.conf file?

Now when I use the same command:

vi httpd.conf

Here's what I see:

they are all ~

How can I restore this file? httpd.conf?