Replace contributors table with DeepSpeed-style circular avatars

[Copilot]

Replace the manual HTML <table> contributors section with auto-generated circular avatars via contrib.rocks, matching the DeepSpeed README style.

• Removes manually maintained 7-column table with rectangular avatars + usernames
• Uses a single <img> from contrib.rocks that auto-generates circular avatar-only layout from repo contributors

<a href="https://github.com/EvolvingLMMs-Lab/OneVision-Encoder/graphs/contributors">
  <img src="https://contrib.rocks/image?repo=EvolvingLMMs-Lab/OneVision-Encoder" width="800px"/>
</a>

Original prompt

你可以改成deepspeed那种形式，只有头像的那种，圆形的
，谢谢

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[Copilot]

Pull request overview

Updates the README’s Contributors section to use a DeepSpeed-style, auto-generated circular avatar strip via contrib.rocks, removing the manually maintained HTML table.

Changes:

• Replaced the manual 7-column contributors <table> with a contrib.rocks-generated contributors image link.
• Simplified the Contributors section markup to a single link + image.

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[Copilot]

The new contributors is missing an alt attribute, while other README images consistently include alt text. Consider adding a descriptive alt (e.g., "Contributors") to improve accessibility/screen reader support.

Suggested change

	<img src="https://contrib.rocks/image?repo=EvolvingLMMs-Lab/OneVision-Encoder" width="800px"/>
	<img src="https://contrib.rocks/image?repo=EvolvingLMMs-Lab/OneVision-Encoder" alt="Contributors" width="800px"/>

[Copilot]

width="800px" is inconsistent with the rest of the README (which uses numeric pixel widths like width="800") and HTML width attributes are typically numeric. Consider changing to width="800" and/or adding style="max-width: 100%;" so the image scales better on narrow screens.