Reverted edit

I just reverted your edit to Beginner's Guide to GitHub which decreased each of the headings by one level. The standard on MediaWiki is for the top-most heading level of an article to be h2 (== Heading Text ==), because the article's title will always be h1. Putting h1 elements (= Heading Text =) within an article's body makes the following sections semantically siblings to the article, rather than sections of the article. 17:46, 10 April 2017 (EDT)