[misc] Improve description

xwiki-platform-core/xwiki-platform-filter/xwiki-platform-filter-instance/xwiki-platform-filter-instance-document/src/main/java/org/xwiki/filter/instance/output/DocumentInstanceOutputProperties.java

@@ -200,7 +200,8 @@ public boolean isAuthorSet()
      * @return true if the authors coming from the events should be kept.
      */
     @PropertyName("Preserve author")
-    @PropertyDescription("Indicate if the authors comming from the events should be kept")
+    @PropertyDescription("Indicate if the authors comming from the events should be kept."
+        + " If false the current user is used.")
     public boolean isAuthorPreserved()
     {
         return !isAuthorSet() && this.authorPreserved;