Librarian Bot: Add base_model information to model

This pull request aims to enrich the metadata of your model by adding [`gpt2`](https://huggingface.co/gpt2) as a `base_model` field, situated in the `YAML` block of your model's `README.md`.

How did we find this information? We performed a regular expression match on your `README.md` file to determine the connection.

**Why add this?** Enhancing your model's metadata in this way:
- **Boosts Discoverability** - It becomes straightforward to trace the relationships between various models on the Hugging Face Hub.
- **Highlights Impact** - It showcases the contributions and influences different models have within the community.

For a hands-on example of how such metadata can play a pivotal role in mapping model connections, take a look at [librarian-bots/base_model_explorer](https://huggingface.co/spaces/librarian-bots/base_model_explorer).

This PR comes courtesy of [Librarian Bot](https://huggingface.co/librarian-bot). If you have any feedback, queries, or need assistance, please don't hesitate to reach out to [@davanstrien](https://huggingface.co/davanstrien). Your input is invaluable to us!

README.md

@@ -2,14 +2,16 @@
 tags:
 - generated_from_keras_callback
 - music
-model-index:
-- name: juancopi81/mutopia_guitar_mmm
-  results: []
 datasets:
 - juancopi81/mutopia_guitar_dataset
 widget:
-- text: "PIECE_START TIME_SIGNATURE=4_4 BPM=90 TRACK_START INST=0 DENSITY=2 BAR_START NOTE_ON=43"
-  example_title: "Time signature 4/4, BPM=90, NOTE=G2"
+- text: PIECE_START TIME_SIGNATURE=4_4 BPM=90 TRACK_START INST=0 DENSITY=2 BAR_START
+    NOTE_ON=43
+  example_title: Time signature 4/4, BPM=90, NOTE=G2
+base_model: gpt2
+model-index:
+- name: juancopi81/mutopia_guitar_mmm
+  results: []
 ---
 
 # juancopi81/mutopia_guitar_mmm