Copy reference on nested class name

In the codebase that I work on, the following pattern is very common:
```ruby
module Foo
  class Bar::Baz
    # ...
  end
end
```

When the cursor is on `Baz` the copy reference copies the following result:
```ruby
Foo::Bar::::Baz
```

instead of
```ruby
Foo::Bar::Baz
```