Update all tests

tests/language_strong/literal_unary_plus_test.dart

Index: tests/language_strong/literal_unary_plus_test.dart
diff --git a/tests/language_strong/literal_unary_plus_test.dart b/tests/language_strong/literal_unary_plus_test.dart
index 336dbc716a477a0f8dc207cef59eebec4c2e7cb7..67619f050d3445b190abff62652e1f5ef2df027c 100644
--- a/tests/language_strong/literal_unary_plus_test.dart
+++ b/tests/language_strong/literal_unary_plus_test.dart
@@ -6,8 +6,8 @@
 // Only a number literal can be preceded by a "+'".
 
 main() {
-  var a = + 1;       /// 01: compile-time error
-  var x = +"foo";    /// 02: compile-time error
-  var x = + "foo";   /// 03: compile-time error
+  var a = + 1;       //# 01: compile-time error
+  var x = +"foo";    //# 02: compile-time error
+  var x = + "foo";   //# 03: compile-time error
 }