Update configuration examples for seamless start

config/content_security_policy.yml.example

@@ -13,6 +13,8 @@ default: &default
   # See https://bugs.webkit.org/show_bug.cgi?id=235873
   connect_src:
     - wss://codeocean.openhpi.de
+    # Enable the StackExchange API for Flowr
+    # - https://api.stackexchange.com
   # Optionally: Specify a custom, non-Sentry URL for reporting CSP violations
   # report_uri: https://example.com/csp-report