about-this-guide.md: improve a bit
diff --git a/src/about-this-guide.md b/src/about-this-guide.md
index f1a406a..4f5733a 100644
--- a/src/about-this-guide.md
+++ b/src/about-this-guide.md
@@ -48,9 +48,9 @@
that are not fully realized yet.
All this makes keeping this guide completely up to date on everything very hard!
-The Guide itself is of course open-source as well,
-and the sources can be found at the [GitHub repository].
-If you find any mistakes in the guide, please file an issue about it.
+The guide itself is of course open source as well,
+and the sources are hosted on [a GitHub repository].
+If you find any mistakes in the guide, please file an issue.
Even better, open a PR with a correction!
If you do contribute to the guide,
@@ -105,7 +105,7 @@
[cheatsheet]: https://bors.rust-lang.org/
[Miri]: https://github.com/rust-lang/miri
[@bors]: https://github.com/bors
-[GitHub repository]: https://github.com/rust-lang/rustc-dev-guide/
+[a GitHub repository]: https://github.com/rust-lang/rustc-dev-guide/
[rustc API docs]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle
[Forge]: https://forge.rust-lang.org/
[compiler-team]: https://github.com/rust-lang/compiler-team/
