Fix disconnect confirmation newline display

Changed \n\n to \n\n so newlines render properly in confirm dialog

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/static/dashboard.html

@@ -794,7 +794,7 @@
         }
 
         async function disconnectMachine(sessionId, machineName) {
-            if (!confirm("Disconnect " + machineName + "?\\n\\nThis will end the remote session.")) return;
+            if (!confirm("Disconnect " + machineName + "?\n\nThis will end the remote session.")) return;
             try {
                 const response = await fetch("/api/sessions/" + sessionId, { method: "DELETE" });
                 if (response.ok) {