tests aligment

Author: Nowosad

helpers/toc.html

@@ -2,7 +2,7 @@
   <h2>First Edition</h2>
   <ul>
     <li>
-      <strong>📖 Geocomputation with Python is now available to buy!</strong> Ask for the book in your library, bookshop
+      <a>📖 Geocomputation with Python is now available to buy!</a> Ask for the book in your library, bookshop
       or search online to get your copy
     </li>
     <li>