Add widget example

Adding [widget example with output](https://huggingface.co/docs/hub/models-widgets#example-outputs) from [here](https://github.com/01-ai/Yi/blob/main/README.md?plain=1#L160) so that users can see an example output.


<img src="https://cdn-uploads.huggingface.co/production/uploads/60a551a34ecc5d054c8ad93e/vwOGyuWTZ27KWEwMLCwHl.png" width="500">

README.md

@@ -2,6 +2,11 @@
 license: other
 license_name: yi-license
 license_link: LICENSE
+widget:
+  - text: "There's a place where time stands still. A place of breath taking wonder, but also"
+    output:
+      text: " of great danger. A place where the very air you breathe could kill you. A place where the only way to survive is to be prepared.\nThe place is called the Arctic.\nThe Arctic is a vast, frozen wilderness. It is a place of extremes. The temperatures can drop to -40 degrees Celsius. The winds can reach speeds of 100 kilometers per hour. The sun can shine for 24 hours a day, or not at all for weeks on end.\nThe Arctic is also a place of great beauty. The ice and snow are a pristine white. The sky is a deep blue. The sunsets are spectacular.\nBut the Arctic is also a place of great danger. The ice can be treacherous. The winds can be deadly. The sun can be blinding.\nThe Arctic is a place where the only way to survive is to be prepared.\nThe Arctic is a place of extremes. The temperatures can drop to -40 degrees Celsius. The winds can reach speeds of 100 kilometers per hour. The sun can shine for 24 hours a day, or not at all for weeks on end.\nThe Arctic is a place of great beauty. The ice and snow are a"
+pipeline_tag: text-generation
 ---
 <div align="center">