Update mercure.rst

dunglas · azjezz · web-flow · commit ec8708560d95 · 2021-12-16T15:38:52.000+01:00
Co-authored-by: Saif Eddin Gmati &lt;29315886+azjezz@users.noreply.github.com&gt;
diff --git a/mercure.rst b/mercure.rst
@@ -115,7 +115,7 @@ In addition to these environment variables,
 MercureBundle provides a more advanced configuration configuration:
 
 * ``secret``: the key to use to sign the JWT
-* ``publish``: a list of topics to allow publishing to when generating the JWT
+* ``publish``: a list of topics to allow publishing to when generating the JWT (only usable when `secret`, or `factory` are provided )
 * ``subscribe``: a list of topics to allow subscribing to when generating the JWT (only usable when `secret`, or `factory` are provided )
 * ``algorithm``: The algorithm to use to sign the JWT (only usable when `secret` is provided )
 * ``provider``: The ID of a service to call to provide the JWT
