Html block contains raw HTML code

*Everything* within a Html block is assuming raw HTML.

Because of the implementation, pod6 syntax will be removed, only its raw text remind. That is, C<code> -> code.

To write C<> within Html block, you can use C&amp;lt;&amp;&gt;

To mix up pod6 and HTML, you can separate them into different blocks. See the example below:

```
=begin Html
111
=end Html

=begin code
  =begin code
  =end code
=end code

=begin Html
222
=end Html
```

Author: tisonkun

lib/Pod/To/HTML.pm

@@ -376,7 +376,7 @@ multi sub node2html(Pod::Block::Named $node) {
 }
 
 sub node2rawhtml(Positional $node) {
-    return $node.map({ $_.contents }).join
+    return $node.map({ node2rawtext $_}).join: "\n"
 }
 
 multi sub node2html(Pod::Block::Para $node) {