docs: fix docker command syntax and add code formatting in README.md

[kno20205]

Description

This PR updates the README to correct the syntax for the Docker command and improves readability by formatting the command as code.

Changes Made

• Corrected the Docker command syntax from (pwd) to $(pwd).
• Added code formatting to the Docker command for better readability.

Motivation

Had an error running the original command due to incorrect syntax.