Update library/core/src/macros/mod.rs

Co-authored-by: nora <[email protected]>

Author: epage

library/core/src/macros/mod.rs

@@ -1273,7 +1273,7 @@ pub(crate) mod builtin {
     /// first macro invocation leading up to the invocation of the `file!`
     /// macro.
     ///
-    /// The file name is derived from the root module's source path passed to the Rust compiler
+    /// The file name is derived from the crate root's source path passed to the Rust compiler
     /// and the sequence the compiler takes to get from root module to the
     /// module containing `file!`, modified by any flags passed to the Rust compiler (e.g.
     /// `--remap-path-prefix`).  If the root module's source path is relative, the initial base