Update src/handlers/note.rs
//! ...details details details...
//! ```
//!
-//! If this is the first summary entry, rustbot will amend the original post (the top-level comment) to add a "Notes" section:
+//! If this is the first summary entry, rustbot will amend the original post (the top-level comment) to add a "Notes" section. The section should **not** be edited by hand.
//!
//! ```md
//! <!-- TRIAGEBOT_SUMMARY_START -->
