Add git repository url link to user guide.

ehuss · ehuss · commit 2b5890e2ed5d · 2021-02-12T07:34:20.000-08:00
diff --git a/guide/book.toml b/guide/book.toml
@@ -10,6 +10,7 @@ edition = "2018"
 [output.html]
 mathjax-support = true
 site-url = "/mdBook/"
+git-repository-url = "https://github.com/rust-lang/mdBook/tree/master/guide"
 
 [output.html.playground]
 editable = true
