Update README.md

[Silas-Labs]

fix: correct grammatical errors

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• CON-1234 Title of The Feature or Fix
• [EXTERNAL] Title of The Feature or Fix

CON-#### | [EXTERNAL]

Why?

Fixes grammatical errors and syntax for clarity and correctness

Solution Overview

Two lines with clear syntax errors were corrected and updated.

Implementation Details

Since one email and one password is required, the question is then rephrased to "is an email and a password..."