docs: update README

[Gaiejj]

Description

• Update publications using OmniSafe in README page.
• Update contents on the tutorials page.
• Polish typos in tutorials.

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds core functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [x] Documentation (update in the documentation)

Checklist

Go over all the following points, and put an x in all the boxes that apply. If you are unsure about any of these, don't hesitate to ask. We are here to help!

• [x] I have read the CONTRIBUTION guide. (required)
• [ ] My change requires a change to the documentation.
• [ ] I have updated the tests accordingly. (required for a bug fix or a new feature)
• [x] I have updated the documentation accordingly.
• [x] I have reformatted the code using make format. (required)
• [x] I have checked the code using make lint. (required)
• [x] I have ensured make test pass. (required)

[codecov[bot]]

Codecov Report

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

Project coverage is 96.56%. Comparing base (63bdd34) to head (e33cc1f).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #316 +/- ## ========================================= + Coverage 0 96.56% +96.56% ========================================= Files 0 139 +139 Lines 0 7090 +7090 ========================================= + Hits 0 6846 +6846 - Misses 0 244 +244 ```

:umbrella: View full report in Codecov by Sentry.
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