Fix a bug in a test.
diff --git a/tests/data/emitting-unacceptable-unicode-character-bug.data b/tests/data/emitting-unacceptable-unicode-character-bug.data
index 4b92854..2a5df00 100644
--- a/tests/data/emitting-unacceptable-unicode-character-bug.data
+++ b/tests/data/emitting-unacceptable-unicode-character-bug.data
@@ -1 +1 @@
-u"\udd00"
+"\udd00"