Javadoc: Fix Object[] references.

Change-Id: Ib9bad54f02356b53c5a2d3596fc2b8429023e828
diff --git a/src/main/java/eu/mulk/jgvariant/core/Decoder.java b/src/main/java/eu/mulk/jgvariant/core/Decoder.java
index 461b9fa..d2f2403 100644
--- a/src/main/java/eu/mulk/jgvariant/core/Decoder.java
+++ b/src/main/java/eu/mulk/jgvariant/core/Decoder.java
@@ -164,7 +164,7 @@
    *   <li>{@link String}
    *   <li>{@link Optional} (a GVariant {@code Maybe} type)
    *   <li>{@link List} (a GVariant array)
-   *   <li>{@link Object[]} (a GVariant structure)
+   *   <li>{@code Object[]} (a GVariant structure)
    *   <li>{@link Variant} (a nested variant)
    * </ul>
    *