Update README.md

Author: adamint

README.md

@@ -21,7 +21,7 @@ This library is available via Maven Central.
 
 ### Gradle
 ```
-compile group: 'com.adamratzman', name: 'spotify-web-api-kotlin', version: '3.1.23.1.2'
+compile group: 'com.adamratzman', name: 'spotify-web-api-kotlin', version: '3.1.2'
 ```
 
 To use the latest snapshot instead, you must add the Jitpack repository