Update the style for no data text for Index LiveViews.

lib/decentralised_book_index_web/live/author_live/index.ex

@@ -50,7 +50,7 @@ defmodule DecentralisedBookIndexWeb.AuthorLive.Index do
     <%= if Enum.empty?(@page.results) do %>
       <div class="flex justify-center ">
         <div>
-          <p class="text-xl font-semibold py-5">
+          <p class="text-xl font-semibold py-5 dark:text-white">
             No Authors
           </p>
         </div>

lib/decentralised_book_index_web/live/book_live/index.ex

@@ -65,7 +65,7 @@ defmodule DecentralisedBookIndexWeb.BookLive.Index do
     <%= if Enum.empty?(@page.results) do %>
       <div class="flex justify-center ">
         <div>
-          <p class="text-xl font-semibold py-5">
+          <p class="text-xl font-semibold py-5 dark:text-white">
             No Books
           </p>
         </div>