fix: use tls_insecure_skip_verify token (this Caddy build has no tls{} transport sub-block)

Caddy v2.11.4's caddyfile adapter rejects 'tls { insecure_skip_verify }'
inside transport http (unrecognized subdirective '{') and also rejects
the handler-level form. The working form, verified live against PMS with
a throwaway caddy (200 OK), is the bare token:

    reverse_proxy 192.168.0.235:32400 {
        transport http {
            tls_insecure_skip_verify
        }
    }

dankclaw/Caddyfile

@@ -192,9 +192,7 @@ pihole.franksdank.cloud {
 http://plex.franksdank.casa {
 	reverse_proxy 192.168.0.235:32400 {
 		transport http {
-			tls {
-				insecure_skip_verify
-			}
+			tls_insecure_skip_verify
 		}
 	}
 }
@@ -207,9 +205,7 @@ http://plex.franksdank.casa {
 plex.franksdank.cloud {
 	reverse_proxy 192.168.0.235:32400 {
 		transport http {
-			tls {
-				insecure_skip_verify
-			}
+			tls_insecure_skip_verify
 		}
 	}
 }