swap in r-causal in favor of causal inference notebook

Author: tgerke

slides/raw/01-causal_modeling_whole_game.qmd

@@ -481,5 +481,5 @@ bind_rows(
 
 ## Resources {background-color="#23373B"}
 ### [Causal Inference](https://www.hsph.harvard.edu/miguel-hernan/causal-inference-book/): Comprehensive text on causal inference. Free online.
-### [Causal Inference Notebook](http://causalinferencebookr.netlify.com): R code to go along with Causal Inference
 ### [Bootstrap confidence intervals with {rsample}](https://rsample.tidymodels.org/articles/Applications/Intervals.html)
+### [R-causal](https://github.com/r-causal): Our GitHub org with R packages and examples