style: derez.ai is all lowercase — brand style fix (verb, not capitalized)

error.html

@@ -4,7 +4,7 @@
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-        <title>Coupon Used — Derez.ai</title>
+        <title>Coupon Used — derez.ai</title>
         <meta name="robots" content="noindex, nofollow" />
 
         <style>
@@ -291,7 +291,7 @@
                 <a href="/" class="site-logo">
                     <img
                         src="assets/images/logo.svg"
-                        alt="Derez.ai"
+                        alt="derez.ai"
                         width="132"
                         height="34"
                         class="site-logo-img"
@@ -312,7 +312,7 @@
                     <h1>This coupon has already been used</h1>
 
                     <p>
-                        Coupon codes and discount keys on Derez.ai are
+                        Coupon codes and discount keys on derez.ai are
                         <strong>single-use only</strong>.
                         Each code can be applied to exactly one purchase.
                     </p>