Merge pull request #489 from moderndive/rudeboybert-patch-1

Update index.Rmd closes #483

index.Rmd

@@ -283,7 +283,7 @@ dev_version <- FALSE
 
 <!-- include=FALSE for PDF sending to CRC -->
 ```{block, include=is_html_output(), purl=FALSE}
-This is the [website](https://moderndive.com/) for *Statistical Inference via Data Science:  A ModernDive into R and the Tidyverse*! Visit the [GitHub repository for this site](https://github.com/moderndive/ModernDive_book) and find the book on [Amazon](https://www.amazon.com/Statistical-Inference-via-Data-Science/dp/0367409828/). You can also purchase it at [CRC Press](https://www.routledge.com/Statistical-Inference-via-Data-Science-A-ModernDive-into-R-and-the-Tidyverse/Ismay-Kim/p/book/9780367409821?utm_source=author&utm_medium=shared_link&utm_campaign=B043134_jm1_5ll_6rm_t081_1al_statisticalinferenceviadatascienceauthorshare).
+This is the [website](https://moderndive.com/) for *Statistical Inference via Data Science:  A ModernDive into R and the Tidyverse*! Visit the [GitHub repository for this site](https://github.com/moderndive/ModernDive_book) and find the book on [Amazon](https://www.amazon.com/Statistical-Inference-via-Data-Science/dp/0367409828/). You can also purchase it at [CRC Press](https://www.routledge.com/Statistical-Inference-via-Data-Science-A-ModernDive-into-R-and-the-Tidyverse/Ismay-Kim/p/book/9780367409821?utm_source=author&utm_medium=shared_link&utm_campaign=B043134_jm1_5ll_6rm_t081_1al_statisticalinferenceviadatascienceauthorshare) using discount code **ADC24**.
 ```
 
 </br>