Chore/update contributor guidelines

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (60d626a) 51.79% compared to head (9cf608f) 51.79%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #27 +/- ## ======================================= Coverage 51.79% 51.79% ======================================= Files 37 37 Lines 863 863 Branches 146 146 ======================================= Hits 447 447 Misses 363 363 Partials 53 53 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.