Mention our policy on typofixes for internal docs
diff --git a/src/contributing.md b/src/contributing.md
index d0a32f7..1ade495 100644
--- a/src/contributing.md
+++ b/src/contributing.md
@@ -370,6 +370,9 @@
`rustdoc src/doc/reference.md` will render reference to `doc/reference.html`.
The CSS might be messed up, but you can verify that the HTML is right.
+Please notice that at this time we don't accept typography/spellcheck fixes to **internal documentation** (example:
+tests, library or compiler code) as it's usually not worth the churn or the review time.
+
### Contributing to rustc-dev-guide
Contributions to the [rustc-dev-guide] are always welcome, and can be made directly at
