Update custom_ice_message.stderr

flip1995 · flip1995 · commit 3c68d892ff60 · 2020-01-16T16:01:36.000+01:00
diff --git a/tests/ui/custom_ice_message.stderr b/tests/ui/custom_ice_message.stderr
@@ -1,5 +1,5 @@
 thread 'rustc' panicked at 'Testing the ICE message', clippy_lints/src/utils/internal_lints.rs
-note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 
 error: internal compiler error: unexpected panic
 
