Fixed code highlight

Froussios · Froussios · commit caae25ee6974 · 2015-05-18T23:34:24.000+02:00
diff --git a/Part 2 - Sequence Basics/5. Transformation of sequences.md b/Part 2 - Sequence Basics/5. Transformation of sequences.md
@@ -452,7 +452,7 @@ public static class Range implements Iterable<Integer> {
 
 We can now iterate over a range and transform it without using a collection.
 
-```
+```java
 Observable.range(1, 3)
 	.flatMapIterable(
 		i -> new Range(1, i),
