Update README.md

Author: katrinsharp

README.md

@@ -3,7 +3,7 @@
 * Install JDK: https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html (JDK 8).
 * Install sbt: 
 Mac: http://www.scala-sbt.org/release/docs/Installing-sbt-on-Mac.html (you can use `brew`, it will install the latest).
-Win: http://www.scala-sbt.org/0.13/docs/Installing-sbt-on-Windows.html
+Win: https://www.scala-sbt.org/release/docs/Installing-sbt-on-Windows.html
 * Install Intellij: 
 Mac: https://www.jetbrains.com/idea/download/#section=mac
 Win: https://www.jetbrains.com/idea/download/#section=windows