fixed javadoc

integraal/integraal-explanation/src/main/java/fr/boreal/explanation/kb_gri/explainers/static_gri/AbstractStaticGRIBasedExplainer_KBGRI.java

@@ -103,7 +103,7 @@ public abstract class AbstractStaticGRIBasedExplainer_KBGRI<ExplanationType> imp
      * Dynamic step
      *
      * @param query
-     * @return
+     *
      */
     public void dynamicStep(Atom query) {
         if (this.explanations != null) {