Fix typo

Spotted by Daniel Gustafsson

Author: mhagander

templates/pages/developer.html

@@ -23,7 +23,7 @@ <h2>What will you find here?</h2>
 
 <h2>How to get involved</h2>
 <p>
-  A few resorces to help you get involved in PostgreSQL development are:
+  A few resources to help you get involved in PostgreSQL development are:
 </p>
 <ul>
   <li>Read the <a href="https://wiki.postgresql.org/wiki/Developer_FAQ#How_do_I_get_involved_in_PostgreSQL_development.3F">Developer FAQ</a>.</li>