Update parameters.mdx (#26382)

Author: ranbel

src/content/docs/cloudflare-one/team-and-resources/devices/warp/deployment/mdm-deployment/parameters.mdx

@@ -211,9 +211,7 @@ Allows you to choose the operational mode of the client.
   <integer>44444</integer>
   ```
 * `postureonly` — [Device Information Only](/cloudflare-one/team-and-resources/devices/warp/configure-warp/warp-modes/#device-information-only).
-
-The service mode [Secure Web Gateway without DNS filtering](/cloudflare-one/team-and-resources/devices/warp/configure-warp/warp-modes/#secure-web-gateway-without-dns-filtering) is not currently supported as a value and must be configured in Zero Trust.
-
+* `tunnelonly` - [Secure Web Gateway without DNS filtering](/cloudflare-one/team-and-resources/devices/warp/configure-warp/warp-modes/#secure-web-gateway-without-dns-filtering).
 
 ### `support_url`