Fixed grammatical errors in the first line.

[Swapnil-11-04-01]

Hi there,

Upon reviewing the readme, I identified a few minor grammatical errors and have suggested appropriate revisions to enhance the professional appeal of the document.

1. - This repository is provides
   + This repository provides

2. - tooling needed to compile
   + necessary tooling to compile

3. - produce a HEX file
   + generates a HEX file