Tweak output for 'add line' suggestion
diff --git a/tests/ui/unresolved/unresolved-candidates.stderr b/tests/ui/unresolved/unresolved-candidates.stderr
index ea737c5..53f63c1 100644
--- a/tests/ui/unresolved/unresolved-candidates.stderr
+++ b/tests/ui/unresolved/unresolved-candidates.stderr
@@ -17,7 +17,8 @@
    |
 help: consider importing this trait
    |
-LL |     use a::Trait;
+LL +     use a::Trait;
+LL |     impl Trait for () {}
    |
 
 error: aborting due to 2 previous errors