Improve documentation and fix typos
References: https://github.com/clue/reactphp-tar/pull/20, https://github.com/clue/reactphp-redis/pull/117, https://github.com/clue/reactphp-shell/pull/20 and https://github.com/clue/reactphp-sqlite/pull/43.
As mentioned in #38 I also created the pull request for improving the documentation and fix typos.
Seems like this is currently blocked by #38 as the test suite won't finish until we applied the suggested changes in #38.
As today is my last day working with you @clue, we agreed closing this pull request and revisit this later on.
If anyone is needing these changes earlier than expected, please consider sponsoring @clue via https://github.com/sponsors/clue. ❤️