update image link

Author: puredanger

content/community/books.adoc

@@ -12,7 +12,7 @@ _Listed in order of descending release date of newest edition._
 [width="80", cols="<.^30a,.^70", role="table"]
 |===
 
-| image::https://pragprog.com/titles/mmclobrain/clojure-brain-teasers/mmclobrain-beta-500.jpg[Clojure Brain Teasers,link="https://pragprog.com/titles/mmclobrain/clojure-brain-teasers/",width="130"]
+| image::https://pragprog.com/titles/mmclobrain/clojure-brain-teasers/mmclobrain-500.jpg[Clojure Brain Teasers,link="https://pragprog.com/titles/mmclobrain/clojure-brain-teasers/",width="130"]
 | https://pragprog.com/titles/mmclobrain/clojure-brain-teasers/[Clojure Brain Teasers] +
 by Alex Miller, Lorilyn Jordan Miller +
 Apr 1, 2025