Fix docs mistake

est31 · est31 · commit 6081989adc7e · 2017-12-25T14:15:59.000+01:00
diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs
@@ -463,7 +463,7 @@ pub mod builtin {
     /// The expanded expression has type `u32` and is 1-based, so the first line
     /// in each file evaluates to 1, the second to 2, etc. This is consistent
     /// with error messages by common compilers or popular editors.
-    /// The returned column is not the invocation of the `line!` macro itself,
+    /// The returned line is not the invocation of the `line!` macro itself,
     /// but rather the first macro invocation leading up to the invocation
     /// of the `line!` macro.
     ///
