Fix HTML support in snippet properties

Author: Fl0Cri

classes/SnippetParser.php

@@ -73,7 +73,7 @@ protected static function extractSnippetsFromMarkup($markup, $theme)
                 : $value;
         };
 
-        if (preg_match_all('/\<figure\s+[^\>]+\>[^\<]*\<\/figure\>/i', $markup, $matches)) {
+        if (preg_match_all('#<figure\s+.+>[^<>]*</figure>#i', $markup, $matches)) {
             foreach ($matches[0] as $snippetDeclaration) {
                 $nameMatch = [];