Merge branch 'typo' of dlab/hive

from pull-request 1469

* refs/heads/typo:
  Fixed typo

Reviewed-by: 김창성 <changsung.kim@navercorp.com>

docs/technical/java-coding-guidlines.md

@@ -22,7 +22,7 @@ Use @Nullable and @Nonnull
 @Nullable is an annotation defined by javax.annotation.Nullable. If an element
 is annotated with @Nullable, we say the element is nullable and it means the
 element may have NULL value. Similarly, if a method is annotated with
-@Nulalble, we say the method is nullable and it means the method may return
+@Nullable, we say the method is nullable and it means the method may return
 NULL.
 
 In a public method: