Unclear reference to a pull request in example-get-started-experiments README.md

[tibor-mach]

Here we have a reference in the README.md to a pull request which adds a model to the studio model registry. But there are no pull requests in that link, it just is just a link to the github pull requests page.

I am not sure if @aguschin meant that if you run the dvc-studio GH Actions workflow that you will get a pull request there or if it was supposed to actually refer to a specific pull request. Either way, I think this might be confusing to people who want to try things out.

I can update it to make it clearer, but please @aguschin let me know what the meaning was. I guess it was the first option, but I don't want to mess it up without asking. Thanks!

[dberenbaum]

There's discussion about it in #204, but it looks like it should have been dropped as part of #207. @tibor-mach Feel free to submit a PR to drop it.

[dberenbaum]

Fixed per #233