Change Caddy links (old is deprecated)

README.rst

@@ -215,7 +215,7 @@ Using a reverse proxy with Synapse
 It is recommended to put a reverse proxy such as
 `nginx <https://nginx.org/en/docs/http/ngx_http_proxy_module.html>`_,
 `Apache <https://httpd.apache.org/docs/current/mod/mod_proxy_http.html>`_,
-`Caddy <https://caddyserver.com/docs/proxy>`_ or
+`Caddy <https://caddyserver.com/docs/quick-starts/reverse-proxy>`_ or
 `HAProxy <https://www.haproxy.org/>`_ in front of Synapse. One advantage of
 doing so is that it means that you can expose the default https port (443) to
 Matrix clients without needing to run Synapse with root privileges.

changelog.d/7789.doc

@@ -0,0 +1 @@
+Update doc links for caddy. Contributed by Nicolai Søborg.

docs/reverse_proxy.md

@@ -3,7 +3,7 @@
 It is recommended to put a reverse proxy such as
 [nginx](https://nginx.org/en/docs/http/ngx_http_proxy_module.html),
 [Apache](https://httpd.apache.org/docs/current/mod/mod_proxy_http.html),
-[Caddy](https://caddyserver.com/docs/proxy) or
+[Caddy](https://caddyserver.com/docs/quick-starts/reverse-proxy) or
 [HAProxy](https://www.haproxy.org/) in front of Synapse. One advantage
 of doing so is that it means that you can expose the default https port
 (443) to Matrix clients without needing to run Synapse with root