Update README.md

Author: JosephCrispell

README.md

@@ -1,5 +1,5 @@
 [![R build status](https://github.com/JosephCrispell/transactionCodeR/workflows/R/badge.svg)](https://github.com/JosephCrispell/transactionCodeR/actions?workflow=R)
-[![GitHub stars](https://img.shields.io/github/stars/JosephCrispell/transactionCodeR?style=social)](https://github.com/JosephCrispell/transactionCodeR)
+[![GitHub stars](https://img.shields.io/github/stars/JosephCrispell/transactionCodeR?style=social)](https://github.com/JosephCrispell/transactionCodeR/)
 
 
 # transaction-coder