Merge #321

321: Minor documentation fix - add information about link.x being necessary. r=adamgreig a=JDuchniewicz

This baffled me so much i had to ask on matrix about it 😄. As a newcomer to embedded Rust I found it confusing.

Co-authored-by: Jakub Duchniewicz <[email protected]>

Author: bors[bot]

cortex-m-rt/src/lib.rs

@@ -34,6 +34,7 @@
 //!
 //! This crate expects the user, or some other crate, to provide the memory layout of the target
 //! device via a linker script named `memory.x`. This section covers the contents of `memory.x`
+//! The `memory.x` file is used by during linking by the `link.x` script provided by this crate.
 //!
 //! ### `MEMORY`
 //!