fix for code tag being sanitized on html render

brain/data/Render.inc.php

@@ -67,7 +67,7 @@ class Render
         $parser = new Parser();
         $rendered = $parser->parse($page["content"]);
         $sanitizer = \HtmlSanitizer\Sanitizer::create([
-          "extensions" => ["basic", "image", "list"],
+          "extensions" => ["basic", "image", "list", "code"],
         ]);
         $preclean = $sanitizer->sanitize($rendered->getContent());
         $cleaned = strip_tags($preclean, [
@@ -84,6 +84,8 @@ class Render
           "h1",
           "h2",
           "h3",
+          "pre",
+          "code",
         ]);
         //$cleaned = preg_replace('/(?:\r\n|[\r\n]){2,}/', "\n\n", $cleaned);
         //$cleaned = html_entity_decode($cleaned, ENT_QUOTES, "UTF-8");