add pretix/pretalx api tokens to env example

Author: artcz

deploy/templates/app/intbot.env.example

@@ -58,3 +58,9 @@ ZAMMAD_GROUP_PROGRAMME="zammad-programme-group-name-goes-here"
 ZAMMAD_GROUP_FINAID="zammad-finaid-group-name-goes-here"
 ZAMMAD_GROUP_SPONSORS="zammad-sponsors-group-name-goes-here"
 ZAMMAD_GROUP_GRANTS="zammad-grants-group-name-goes-here"
+
+# Pretalx
+PRETALX_API_TOKEN="pretalx-api-token"
+
+# Pretix
+PRETIX_API_TOKEN="pretix-api-token"