Add reference to signaling messages to internal signaling document

SystemKeeper · SystemKeeper · commit 11018647df3a · 2023-05-02T16:45:32.000+02:00
Signed-off-by: Marcel Müller &lt;marcel-mueller@gmx.de&gt;
diff --git a/docs/internal-signaling.md b/docs/internal-signaling.md
@@ -54,3 +54,8 @@ Todo
 ### External signaling API
 
 See [External signaling API](https://nextcloud-spreed-signaling.readthedocs.io/en/latest/) for the Signaling API of the High-Performance Backend.
+
+
+### Signaling messages
+
+See [Signaling Messages](signaling-messages.md)
