Add new sponsor manuasbrain

Signed-off-by: Isaac Bennetch <bennetch@gmail.com>

Author: ibennetch

pmaweb/templates/sponsors.html

@@ -97,6 +97,7 @@ <h3>Bronze sponsors</h3>
 <a href="https://www.dailyfantasycafe.com/">Daily Fantasy Cafe</a>
 <a href="https://krismis.com">Krismis</a>
 <a href="https://www.bank24.nu/">Bank24</a>
+<a href="https://manualsbrain.com/en/">User manuals</a>
 </div>
 
 <h2 id="conditions">Becoming a sponsor</h2>