traits.md: Fix example of using traits to match description

traits.md said:

If we add a `use` line right above `main` and make the right things public,
everything is fine:

However, the use line was actually placed at the top of the file instead.  Move
the use line to right above main.  That also makes the example more evocative
of cases where the module is defined in a separate file.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/doc/trpl/traits.md b/src/doc/trpl/traits.md
index 341c90a7087..2986de4179b 100644
--- a/src/doc/trpl/traits.md
+++ b/src/doc/trpl/traits.md
@@ -229,8 +229,6 @@ everything is fine:
 
 ```{rust}
 # #![feature(core)]
-use shapes::HasArea;
-
 mod shapes {
     use std::f64::consts;
 
@@ -251,6 +249,7 @@ mod shapes {
     }
 }
 
+use shapes::HasArea;
 
 fn main() {
     let c = shapes::Circle {