Fix type error

Author: fivefilters

src/Nodes/NodeUtility.php

@@ -99,7 +99,7 @@ public static function setNodeTag(DOMNode|DOMElement $node, string $value, bool
     /**
      * Removes the current node and returns the next node to be parsed (child, sibling or parent).
      */
-    public static function removeAndGetNext(DOMNode|DOMComment|DOMText|DOMElement $node): DOMNode|DOMComment|DOMText|DOMElement|null
+    public static function removeAndGetNext(DOMNode|DOMComment|DOMText|DOMElement|DOMProcessingInstruction $node): DOMNode|DOMComment|DOMText|DOMElement|DOMProcessingInstruction|null
     {
         $nextNode = self::getNextNode($node, true);
         $node->parentNode->removeChild($node);

src/Readability.php

@@ -2065,7 +2065,7 @@ private function headerDuplicatesTitle(DOMNode|DOMText|DOMElement|DOMProcessingI
      * Readability.js has a special filter to avoid cleaning the classes that the algorithm adds. We don't add classes
      * here so no need to filter those.
      **/
-    public function _cleanClasses(DOMDocument|DOMText|DOMNode|DOMElement $node): void
+    public function _cleanClasses(DOMDocument|DOMText|DOMNode|DOMElement|DOMProcessingInstruction $node): void
     {
         if ($node->hasAttribute('class')) {
             $node->removeAttribute('class');