[ruby/did_you_mean] Support the new message format of NameError in

Ruby 3.3
(https://github.com/ruby/did_you_mean/pull/184)

This change accepts the following change of the message of NameError in
a test.

https://bugs.ruby-lang.org/issues/18285#note-37

```
old: undefined method `sizee' for #<File:...>
new: undefined method `sizee' for an instance of File
```

test/did_you_mean/core_ext/test_name_error_extension.rb

@@ -49,7 +49,7 @@ class NameErrorExtensionTest < Test::Unit::TestCase
 
     get_message(error)
 
-    assert_equal "undefined method `sizee' for #<File:test_name_error_extension.rb (closed)>",
-                 Marshal.load(Marshal.dump(error)).original_message
+    assert_match(/^undefined method `sizee' for /,
+                 Marshal.load(Marshal.dump(error)).original_message)
   end
 end