Config Filter module grammatical error in README.md

Hello, I am working on this issue!

Hi, I fixed the grammatical error in this MR12. Could anyone review it? If there are any problems, please let me know.

This looks correct to me, is anything else needed here?

Hi, I tested this module and noticed a grammatical mistake in the README.md file. After applying MR #12, it is now showing correctly. Thanks.