Update README.md

README.md

@@ -71,4 +71,4 @@ Derived from U.S. government public data. The underlying data is in the public d
 
 ## Purchase
 
-For the full dataset: https://wapplewhite.gumroad.com/l/fda-enforcement-linkage
+For the full dataset: https://mandiasdata.gumroad.com/l/fda-enforcement-linkage