Update site attribution

Author: nyamsprod

docs/_layouts/default.html

@@ -116,7 +116,7 @@ <h3 class="font-semibold tracking-tight text-slate-900">Older versions</h3>
 
                 <p class="font-mono text-sm tracking-tighter">
                     <a href="https://twitter.com/sandr" target="_blank" class="transition-all hover-text">
-                        Brand and site design by <span class="underline">Sander van der Kolk</span>
+                        Site design by <span class="underline">Sander van der Kolk</span>
                     </a>
                 </p>
             </div>

docs/_layouts/homepage.html

@@ -85,7 +85,7 @@ <h2 class="font-medium text-3xl text-light">Work with HTTP Structured Fields in
 
                 <p class="font-mono text-sm tracking-tighter">
                     <a href="https://twitter.com/sandr" target="_blank" class="transition-all hover-text">
-                        Brand and site design by <span class="underline">Sander van der Kolk</span>
+                        Site design by <span class="underline">Sander van der Kolk</span>
                     </a>
                 </p>
             </div>

docs/_layouts/redirect.html

@@ -64,7 +64,7 @@ <h1>Redirecting…</h1>
 
             <p class="font-mono text-sm tracking-tighter">
                 <a href="https://twitter.com/sandr" target="_blank" class="transition-all hover-text">
-                    Brand and site design by <span class="underline">Sander van der Kolk</span>
+                    Site design by <span class="underline">Sander van der Kolk</span>
                 </a>
             </p>
         </div>