Update URL for "PostgreSQL for Beginners" book

The source page for this had changed with the publication of
another book in this list.

Author: Pavel Luzanov <p.luzanov@postgrespro.ru>

diff --git a/templates/pages/docs/books.html b/templates/pages/docs/books.html
index b97b4e39c9529aca81eabac0bb541cb78d5ff976..eebadca0cbc852d7231af2275d5a913896d152f9 100644 (file)
--- a/templates/pages/docs/books.html
+++ b/templates/pages/docs/books.html
@@ -163,7 +163,7 @@
       </tr>
       <tr>
         <td>
-          <a href="https://postgrespro.com/education/books/introbook"><img
+          <a href="https://edu.postgrespro.ru/introbook_v4_en.pdf"><img
                       src="/media/img/docs/books/PostgreSQL_for_beginners.png"
                       alt="PostgreSQL for beginners" /></a>
         </td>