Update reverse-proxy.md

Increase timeouts to prevent connection reset on uploads >100MB in clean Traefik setup

Signed-off-by: Kai Biebel <38378574+seclution@users.noreply.github.com>

reverse-proxy.md

@@ -765,6 +765,9 @@ The examples below define the dynamic configuration in YAML files. If you rather
     entryPoints:
       https:
         address: ":443" # Create an entrypoint called "https" that uses port 443
+          transport:
+            respondingTimeouts:
+              readTimeout: 30m # Allows uploads > 100MB; prevents connection reset due to chunking (public upload-only links)
         # If you want to enable HTTP/3 support, uncomment the line below
         # http3: {}