nixos/matrix-synapse: fix link to install instructions

Changed files
+1 -1
nixos
modules
services
matrix
+1 -1
nixos/modules/services/matrix/synapse.xml
···
synapse server for the <literal>example.org</literal> domain, served from
the host <literal>myhostname.example.org</literal>. For more information,
please refer to the
-
<link xlink:href="https://github.com/matrix-org/synapse#synapse-installation">
installation instructions of Synapse </link>.
<programlisting>
{ pkgs, lib, config, ... }:
···
synapse server for the <literal>example.org</literal> domain, served from
the host <literal>myhostname.example.org</literal>. For more information,
please refer to the
+
<link xlink:href="https://matrix-org.github.io/synapse/latest/setup/installation.html">
installation instructions of Synapse </link>.
<programlisting>
{ pkgs, lib, config, ... }: