Encode string values, as they can be random data

Author: phpfui

src/PHPFUI/InstaDoc/Section/CodeCommon.php

@@ -446,6 +446,7 @@ protected function getValueString($value) : string
 				break;
 
 			case 'string':
+				$value = \htmlspecialchars($value);
 				$value = $this->getColor('string', "'{$value}'");
 
 				break;