Fix for old jinja versions

Co-authored-by: Procuria <37988494+Procuria@users.noreply.github.com>

group_vars/matrix_servers

@@ -697,7 +697,7 @@ matrix_hookshot_proxy_metrics_basic_auth_enabled: "{{ matrix_nginx_proxy_proxy_s
 
 matrix_hookshot_generic_urlprefix_port_enabled: "{{ matrix_nginx_proxy_container_https_host_bind_port == 443 if matrix_nginx_proxy_https_enabled else matrix_nginx_proxy_container_https_host_bind_port == 80 }}"
 matrix_hookshot_generic_urlprefix_port: ":{{ matrix_nginx_proxy_container_https_host_bind_port if matrix_nginx_proxy_https_enabled else matrix_nginx_proxy_container_http_host_bind_port }}"
-matrix_hookshot_generic_urlprefix: "http{{ 's' if matrix_nginx_proxy_https_enabled }}://{{ matrix_server_fqn_matrix }}{{ matrix_hookshot_generic_urlprefix_port if matrix_hookshot_generic_urlprefix_port_enabled }}{{ matrix_hookshot_generic_endpoint }}"
+matrix_hookshot_generic_urlprefix: "http{{ 's' if matrix_nginx_proxy_https_enabled else '' }}://{{ matrix_server_fqn_matrix }}{{ matrix_hookshot_generic_urlprefix_port if matrix_hookshot_generic_urlprefix_port_enabled else '' }}{{ matrix_hookshot_generic_endpoint }}"
 
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