Recognize MarkDown headings, Lists, Fences & Tables

This commits adds the support to recognize markdown Headings, Lists,
Fences & Tables for formatter

Fixes : #4337

Author: SougandhS

org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/RunFormatterTests.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2005, 2015 IBM Corporation and others.
+ * Copyright (c) 2005, 2025 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -41,6 +41,7 @@ public class RunFormatterTests extends junit.framework.TestCase {
 		TEST_SUITES.add(FormatterJavadocDontIndentTagsTests.class);
 		TEST_SUITES.add(FormatterJavadocDontIndentTagsDescriptionTests.class);
 		TEST_SUITES.add(FormatterOldBugsGistTests.class);
+		TEST_SUITES.add(FormatterMarkdownCommentsTests.class);
 
 		// should always be the last one, to cleanup environment after messy tests
 		TEST_SUITES.add(CleanupAfterSuiteTests.class);