updated copy of preview url

app/views/blog_posts/_form.html.erb

@@ -22,7 +22,7 @@
               <%= form.label :slug, class: "block text-sm font-medium text-gray-700" %>
               <div class="mt-1 flex rounded-md shadow-sm">
                 <span class="inline-flex items-center px-3 rounded-l-md border border-r-0 border-gray-300 bg-gray-50 text-gray-500 sm:text-sm">
-                  https://yt.careers/blog/
+                  https://www.yoursite/blog/
                 </span>
                 <%= form.text_field :slug, required: true, class: "flex-1 block w-full min-w-0 rounded-none rounded-r-md sm:text-sm border-gray-300 focus:border-primary-500 focus:ring focus:ring-primary-500 focus:ring-opacity-50", placeholder: "how-to-grow-a-saas" %>
               </div>