Update to Learning Perl, 8th Edition

Author: briandfoy

docs/learn/books/books_content.html

@@ -23,17 +23,17 @@ <h3 id="[% name %]">[% title %]</h3>
 <div class="row row-height">
 [% PROCESS book_block
     name => 'learnperl',
-    title => 'Learning Perl, 7th Edition',
-    isbn => '1491954329',
+    title => 'Learning Perl, 8th Edition',
+    isbn => '1492094951',
     link => '',
     author => 'by Randal L. Schwartz, brian d foy, Tom Phoenix;
-    394 pages;
+    395 pages;
     O\'Reilly Media, Inc.;
-    (October 2016)',
+    (August 2021)',
     description => "
     A tutorial book, covering how
        you could spend the first 30 to 40 hours with Perl. The seventh edition
-       covers up to Perl 5.24. Reflecting years of classroom testing and
+       covers up to Perl 5.34. Reflecting years of classroom testing and
        experience, this edition is packed with exercises that let you
        practice the concepts while you follow the text.
     ",