Update r.md

Gscorreia89 · web-flow · commit b0bfed43f352 · 2018-11-14T15:50:13.000Z
diff --git a/r.md b/r.md
@@ -129,7 +129,7 @@ Additional information is often provided together with packages on their website
 - tidyR
 - XCMS
 
-Check out [tidyverse](https://www.tidyverse.org/) a set of packages specifically designed for data science.
+Check out [tidyverse](https://www.tidyverse.org/), a set of packages specifically designed for data science.
 
 ## Data types
 
