add mishrasamiksha as a contributor for doc

[allcontributors]

Adds @mishrasamiksha as a contributor for doc.

This was requested by themohammadsa in this comment

[skip ci]

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ manojVivek
❌ allcontributors[bot]
_{You have signed the CLA already but the status is still pending? Let us recheck it.}