Fix markdown for code example.

notes/0.13.7.markdown

@@ -41,10 +41,11 @@
 - Maven artifact dependencies will limit their transitive dependencies to `Compile` rather than *every configuration* if no `master` configuration is found. [#1586][1586] by [@jsuereth][@jsuereth]
 - The new natural whitspace handling parser is unable to cope with certain classes of Scala syntax. In particular, top-level pattern matches, or multi-value defintions are no longer supported:
 
-
+```scala
     val x, y = project // BAD
     val x = project  // 
     val y = project  //  GOOD
+```
 
 ### Improvements