docs: add note user.scrollTo in favour of fireEvent.scroll and edit broken links

[vanGalilea]

Summary

• Clarify that the User Event API is more reliable than the Fire Event API as its more suitable for RN env simulation.
• Fix broken links to code base

Test plan

• review changed content

• double check that the links now work

  relates to #1549

Future improvements

• [ ] support scroll to the bottom of a VirtualizedList

[codecov[bot]]

Codecov Report

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

Comparison is base (21254b0) 95.40% compared to head (068be8f) 95.51%. Report is 1 commits behind head on main.

:exclamation: Current head 068be8f differs from pull request most recent head 5ee74aa. Consider uploading reports for the commit 5ee74aa to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1551 +/- ## ========================================== + Coverage 95.40% 95.51% +0.11% ========================================== Files 99 99 Lines 5400 5400 Branches 858 857 -1 ========================================== + Hits 5152 5158 +6 + Misses 248 242 -6 ```

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