feat(#15): fix after review

Author: Marat-Tim

src/main/java/org/eolang/lints/Defect.java

@@ -166,11 +166,11 @@ public Default(
          * @param text Description of the defect
          * @checkstyle ParameterNumberCheck (5 lines)
          */
-        public Default(
+        Default(
             final String rule, final Severity severity,
             final int line, final String text
         ) {
-            this(rule, severity, null, line, text);
+            this(rule, severity, "", line, text);
         }
 
         /**

src/main/java/org/eolang/lints/MarkdownLinter.java

@@ -19,7 +19,7 @@
  *
  * @since 0.0.47
  */
-public final class MarkdownLinter implements Closeable {
+final class MarkdownLinter implements Closeable {
     /**
      * JavaScript code of markdownlint with function, that run markdownlint on single string.
      */
@@ -46,7 +46,7 @@ public final class MarkdownLinter implements Closeable {
     private final Value mdlint;
 
     @SuppressWarnings("PMD.ConstructorOnlyInitializesOrCallOtherConstructors")
-    public MarkdownLinter() {
+    MarkdownLinter() {
         this.context = Context.newBuilder("js")
             .option("engine.WarnInterpreterOnly", "false")
             .build();
@@ -84,6 +84,13 @@ public void close() {
         this.context.close();
     }
 
+    /**
+     * Get the first name starting with MD from the name array.
+     *
+     * @param names Java scrit array of names.
+     * @return The first name starting with MD.
+     * @throws IllegalStateException If no name starting with MD is found.
+     */
     private static String getName(final Value names) {
         for (int idx = 0; idx < names.getArraySize(); idx += 1) {
             final String name = names.getArrayElement(idx).asString();

src/main/javascript/markdownlint.js

@@ -2,7 +2,10 @@
  * SPDX-FileCopyrightText: Copyright (c) 2016-2025 Objectionary.com
  * SPDX-License-Identifier: MIT
  */
-
+/**
+ * @todo #15:45min Add eslint to repository https://github.com/eslint/eslint.
+ * We should integrate eslint into the eslint repository to monitor the quality of code written in java script.
+ */
 import { lint as lintSync } from "markdownlint/sync";
 
 globalThis.lint = function(text) {

src/test/java/org/eolang/lints/LtInvalidMarkdownCommentTest.java

@@ -2,7 +2,6 @@
  * SPDX-FileCopyrightText: Copyright (c) 2016-2025 Objectionary.com
  * SPDX-License-Identifier: MIT
  */
-
 package org.eolang.lints;
 
 import java.io.IOException;