Remove trailing space in codejam rules

Author: Bluenix2

pydis_site/templates/events/pages/code-jams/9/rules.html

@@ -16,7 +16,7 @@
         <p><strong>Your solution must only communicate through WebSockets</strong>. Any communication between the client and server (or any two server workers), must utilize WebSockets.</p>
 
         <p>
-            An exception to this rule is that communication with databases and files is allowed for accessing resources or for storage purposes. 
+            An exception to this rule is that communication with databases and files is allowed for accessing resources or for storage purposes.
             For example, you may use PostgreSQL as a database but not its `NOTIFY` command.
             Working with subprocesses (through stdin/stdout or <code>multiprocessing.Pool()</code>/<code>concurrent.futures.ProcessPoolExecutor()</code>) is also allowed.
         </p>