Make README.md and index.qmd more consistent

[julianlheureux]

I have unified the examples presented in both the README section and the main page index of the package. This will assist practitioners by providing cases using both simulated datasets and those incorporated within the package.

Additionally, this feature allows users to run an example without needing to load a dataset themselves.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.20%. Comparing base (714ccb7) to head (8087a73).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #793      +/-   ##
==========================================
+ Coverage   90.14%   90.20%   +0.05%     
==========================================
  Files          46       46              
  Lines        3836     3900      +64     
==========================================
+ Hits         3458     3518      +60     
- Misses        378      382       +4     

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[tomicapretto]

Hi Julián! Thanks a lot for the contribution. Just left a couple of suggestions.