Fix sops secrets

modules/services/matrix.nix

@@ -221,6 +221,10 @@
           longReplyTemplate = "<$NICK> \"$ORIGINAL\" <- $REPLY";
           shortReplyTresholdSeconds = 300;
         };
+
+        mediaProxy = {
+          publicUrl = "https://matrix.crans.org/media";
+        };
       };
 
       advanced = {