Update open-xchange.json

open-xchange.json

@@ -44,7 +44,7 @@
 		"website_url": "https://www.open-xchange.com/products/ox-dovecot-pro/?hsLang=en",
 		"created_year": "",
 		"description": "The world’s market-leading IMAP server, OX Dovecot Pro, delivers dynamic scalability, high performance, efficient utilization of hardware and outstanding support to the world’s largest Telcos and ISP's.",
-		"category_list": ["Server"],
+		"category_list": ["Networking"],
 		"similar_solution_list": [],
 		"licence_list": [],
 		"source_code_download": "https://github.com/open-xchange",