Added the steps to sign the CLA agreement to the readme.

[taitken-splunk]

No description provided.

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[github-actions]

CLA Assistant Lite bot:
Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

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I have read the CLA Document and I hereby sign the CLA

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_{You can retrigger this bot by commenting recheck in this Pull Request}

[taitken-splunk]

I have read the Code of Conduct and I hereby accept the Terms

[taitken-splunk]

I have read the CLA Document and I hereby sign the CLA