Fix broken javadoc.

Author: greenrobot-team

objectbox-java/src/main/java/io/objectbox/sync/package-info.java

@@ -28,8 +28,8 @@
  *     credentials.</li>
  *     <li>Optional: use the {@link io.objectbox.sync.SyncBuilder} instance from the last step to configure the sync
  *     client and set initial listeners.</li>
- *     <li>Call {@link io.objectbox.sync.SyncBuilder#build()}</li> to get an instance of
- *     {@link io.objectbox.sync.SyncClient} (and hold on to it). Synchronization is now active.
+ *     <li>Call {@link io.objectbox.sync.SyncBuilder#build()} to get an instance of
+ *     {@link io.objectbox.sync.SyncClient} (and hold on to it). Synchronization is now active.</li>
  *     <li>Optional: Interact with {@link io.objectbox.sync.SyncClient}</li>
  * </ol>
  */

objectbox-java/src/main/java/io/objectbox/tree/Tree.java

@@ -19,7 +19,7 @@
  * Adding properties to tree types is allowed.
  * <p>
  * Note there are TWO ways to work with tree data (both ways can be mixed):
- * - Standard ObjectBox entity types with e.g. Box<DataLeaf>
+ * - Standard ObjectBox entity types with e.g. Box&lt;DataLeaf&gt;
  * - Higher level tree API via this Tree class
  * <p>
  * To navigate in the tree, you typically start with {@link #getRoot()}, which returns a {@link Branch}.