fix: fix html comment after list (#3518)

src/Tokenizer.ts

@@ -305,7 +305,7 @@ export class _Tokenizer {
           const hrRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}((?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$)`);
           const fencesBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:\`\`\`|~~~)`);
           const headingBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}#`);
-          const htmlBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}<[a-z].*>`, 'i');
+          const htmlBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}<(?:[a-z].*>|!--)`, 'i');
 
           // Check if following lines should be included in List Item
           while (src) {

test/specs/new/html_following_list.html

@@ -5,3 +5,11 @@
 <div class="some-class">
 Content
 </div>
+
+<ul>
+  <li>list item 1</li>
+  <li>list item 2</li>
+</ul>
+<!--
+Comment
+-->

test/specs/new/html_following_list.md

@@ -3,3 +3,9 @@
 <div class="some-class">
 Content
 </div>
+
+- list item 1
+- list item 2
+<!--
+Comment
+-->