Clean up E0439 explanation

diff --git a/src/librustc_error_codes/error_codes/E0439.md b/src/librustc_error_codes/error_codes/E0439.md
index e6da2117ac5f2b64a468fabab81c81bb5534ad23..3e663df866caaac49ba8e63468672409c5430359 100644 (file)
--- a/src/librustc_error_codes/error_codes/E0439.md
+++ b/src/librustc_error_codes/error_codes/E0439.md
@@ -1,5 +1,6 @@
-The length of the platform-intrinsic function `simd_shuffle`
-wasn't specified. Erroneous code example:
+The length of the platform-intrinsic function `simd_shuffle` wasn't specified.
+
+Erroneous code example:
 
 ```compile_fail,E0439
 #![feature(platform_intrinsics)]