wizards: fix javadoc error: unknown tag: returns

Change-Id: I3d10c48a5fac2683f76cf21ef5c746377ca9a8c4
Reviewed-on: https://gerrit.libreoffice.org/11238Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>

wizards/com/sun/star/wizards/ui/FilterComponent.java

@@ -691,7 +691,7 @@ public class FilterComponent
         }
 
         /**
-         * @returns true if the current condition is complete, all needed fields are filled with values.
+         * @return true if the current condition is complete, all needed fields are filled with values.
          * So we can enable the next.
          */
         private boolean isConditionComplete()