Update README.md

Author: paullynchmedia

README.md

@@ -23,7 +23,7 @@ We believe in making our journalism accessible to as many people as possible.  W
 
 In March 2024, we looked at the UK government's response to tracking the spread of new super-strength drugs. We found evidence of more than 100 deaths linked to synthetic opioids called nitazenes between July 2023 and February 2024.
 
-*[Github repo](https://github.com/BBC-Data-Unit/Synthetic_opioids)
+* [Github repo](https://github.com/BBC-Data-Unit/Synthetic_opioids)
 
 ### NHS crisis: Patient care hit by disrepair in buildings