Add new incidents webhook to exmaple config.yml

This was recently added to the bot.

Author: ChrisLovering

pydis_site/apps/content/resources/guides/pydis-guides/contributing/bot.md

@@ -196,6 +196,7 @@ guild:
         big_brother:                            �
         dev_log:                                �
         duck_pond:                              �
+        incidents:                              �
         incidents_archive:                      �
         python_news:        &PYNEWS_WEBHOOK     �
         talent_pool:                            �