Turnitin primarily checks for similarities in text by comparing submitted work against a vast database of academic papers, articles, and web content. If the content on the website you referred to has been published and is indexed in Turnitin's database, it's possible that using text from that website could lead to a match when your work is submitted.
If you are using information from a website, it's important to paraphrase the content and provide proper citations to avoid potential issues with plagiarism. Always ensure that you follow your institution's guidelines on citing sources.