Add browser client support info (#437)

Author: mlsmaycon

src/pages/selfhosted/selfhosted-quickstart.mdx

@@ -93,6 +93,17 @@ To upgrade NetBird to the latest version, you need to review the [release notes]
     docker compose up -d --force-recreate management dashboard signal relay
     ```
 
+### Support browser clients
+If you deployed NetBird before version **0.59.0** and want to use browser clients, you need to update your Signal, Management, Dashboard and Relay services, see [Upgrade](#upgrade), then you need to edit the `Caddyfile` file to enable support for browser clients by adding the following lines to the `Caddyfile`:
+```
+    reverse_proxy /ws-proxy/management* management:80
+    reverse_proxy /ws-proxy/signal* signal:10000
+```
+Then restart the Caddy service to apply the changes:
+```bash
+docker compose restart caddy
+```
+
 ### Remove
 To remove the NetBird installation and all related data from your server, run these commands from the folder where you installed NetBird:
 ```bash