Auto merge of #9493 - ehuss:contrib-git-url, r=alexcrichton

bors · bors · commit 6ca6dd0bffaf · 2021-05-18T21:48:52.000Z
Add GitHub link to contributor guide.

This adds a small icon on each page that links back to the GitHub source.
diff --git a/src/doc/contrib/book.toml b/src/doc/contrib/book.toml
@@ -1,3 +1,6 @@
 [book]
 title = "Cargo Contributor Guide"
 authors = ["Eric Huss"]
+
+[output.html]
+git-repository-url = "https://github.com/rust-lang/cargo/tree/master/src/doc/contrib/src"
