Update terms.html

fix canonical link

terms.html

@@ -15,7 +15,7 @@
         <title>Terms and Conditions of Service - Kinthai</title>
         <meta name="description" content="Read the detailed terms and conditions for using Kinthai's services. Ensure you understand our policies and your rights as a customer.">
         <meta name="robots" content="index, follow">
-        <link rel="canonical" href="https://kinthai.in.th/terms.php">
+        <link rel="canonical" href="https://kinthai.in.th/terms.html">
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />