Librarian Bot: Add base_model information to model

This pull request aims to enrich the metadata of your model by adding [`facebook/wav2vec2-xls-r-300m`](https://huggingface.co/facebook/wav2vec2-xls-r-300m) 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

@@ -9,23 +9,24 @@ tags:
 - uk
 datasets:
 - mozilla-foundation/common_voice_7_0
+base_model: facebook/wav2vec2-xls-r-300m
 model-index:
 - name: wav2vec2-xls-r-300m-uk-with-lm
   results:
-  - task: 
-      name: Automatic Speech Recognition 
+  - task:
       type: automatic-speech-recognition
+      name: Automatic Speech Recognition
     dataset:
       name: Common Voice 7
       type: mozilla-foundation/common_voice_7_0
       args: uk
     metrics:
-       - name: Test WER
-         type: wer
-         value: 26.47
-       - name: Test CER
-         type: cer
-         value: 2.90
+    - type: wer
+      value: 26.47
+      name: Test WER
+    - type: cer
+      value: 2.9
+      name: Test CER
 ---