[tidy] update documentation from `make check` to `x.py test`

diff --git a/src/tools/tidy/src/main.rs b/src/tools/tidy/src/main.rs
index ec8b14c288a2f10a4af400b61eca0ec6bc398fa7..0b433965051383956d2ff3499942efdf57db5e69 100644 (file)
--- a/src/tools/tidy/src/main.rs
+++ b/src/tools/tidy/src/main.rs
@@ -1,8 +1,8 @@
 //! Tidy checks source code in this repository.
 //!
 //! This program runs all of the various tidy checks for style, cleanliness,
-//! etc. This is run by default on `make check` and as part of the auto
-//! builders.
+//! etc. This is run by default on `./x.py test` and as part of the auto
+//! builders. The tidy checks can be executed with `./x.py test src/tools/tidy`.
 
 #![deny(warnings)]