doc(threadSafe): wrap lazy val into ``

Author: robstoll

docs/docs/reference/other-new-features/threadUnsafe-annotation.md

@@ -3,8 +3,8 @@ layout: doc-page
 title: threadUnsafe annotation
 ---
 
-A new annotation `@threadUnsafe` can be used on a field which defines a lazy
-val. When this annotation is used, the initialization of the lazy val will use a
+A new annotation `@threadUnsafe` can be used on a field which defines a `lazy
+val`. When this annotation is used, the initialization of the lazy val will use a
 faster mechanism which is not thread-safe.
 
 ### Example