[docs]: Redundant "keploy" in testing guide

[pratik-mahalle]

👀 Is there an existing issue for this?

• I have searched and didn't find similar issue

💭 Description

There is a grammar issue in the documentation under "Testing Guide?".

This sentence is not grammatically correct and should be rephrased for better clarity.
This is a minor issue and does not affect functionality, but fixing it will make the docs more professional and easier to read.

💻 Repository

docs

[kartikeyg0104]

@Achanandhi-M Sir, I have raised the Pull request(keploy/docs#675 can once go through it.

[Achanandhi-M]

@pratik-mahalle please review the PR

[skeyur18]

@Achanandhi-M, Raised an PR and please review