Docs: Typo Fix

[Chaitanya110703]

Corrected "light-weight" to "lightweight" in [README.md].

This pull request addresses a minor typo found in repository. The typo has been corrected to improve clarity and maintain the quality of the documentation.

This change is purely cosmetic and does not affect functionality.

[github-actions]

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[gfursin]

Thank you @Chaitanya110703 for your contribution! May I ask you to sign MLCommons CLA before I can merge your PR, please?

MLCommons CLA bot:
Thank you very much for your submission, we really appreciate it. Before we can accept your contribution, we ask that you sign the MLCommons CLA (Apache 2). Please use this [Google form] (https://forms.gle/Ew1KkBVpyeJDuRw67) to initiate authorization. If you are from an MLCommons member organization, we will request that you be added to the CLA. If you are not from a member organization, we will email you a CLA to sign. For any questions, please contact [email protected].
0 out of 1 committers have signed the MLCommons CLA.

[gfursin]

Looks fine.