fix another ref to that link

Author: carriewright11

07-durable-code.Rmd

@@ -301,7 +301,7 @@ There's so many opinions and strategies on best practices for code. And although
 
 - [Data Carpentry's: Best Practices for Writing R Code](https://swcarpentry.github.io/r-novice-inflammation/06-best-practices-R.html) by @DataCarpentry2021b.
 - [R Programming for Research: Reproducible Research](https://geanders.github.io/RProgrammingForResearch/reproducible-research-1.html) by @Good2021.
-- [R for Epidemiology: Coding best practices](https://www.r4epi.com/coding-best-practices.html) by @Cannell2021.
+- [R for Epidemiology: Coding best practices](https://www.r4epi.com/chapters/best_practices/best_practices) by @Cannell2021.
 - [Best practices for R Programming](https://towardsdatascience.com/best-practices-for-r-programming-ec0754010b5a) by @Bernardo2021.
 
 ## Get the exercise project files (or continue with the files you used in the previous chapter)