Update README.md

[ansuhayda]

Fixed two typos on line 19 in the last sentence. It reads "It would make a competitive edge compared to other scanner making it one of the bests." I added an "s" to "scanner" and removed the "s" from "bests" to correct the grammar.

Checklist

• I have followed the Contributor Guidelines.
• The code has been thoroughly tested in my local development environment with flake8 and pylint.
• The code is Python 3 compatible.
• The code follows the PEP8 styling guidelines with 4 spaces indentation.
• This Pull Request relates to only one issue or only one feature
• I have referenced the corresponding issue number in my commit message
• I have added the relevant documentation.
• My branch is up-to-date with the Upstream master branch.

Changes proposed in this pull request

Your development environment

• OS: x
• OS Version: x
• Python Version: x

[ansuhayda]

This is the first time I've ever changed another's file or created a pull request, so please let me know if I've done anything incorrectly. Thank you!