docs(explorer): Fixed small typo with extra } in explorer.md (#541)

Thomas

2023-10-18 86d16b12a224d125ba469f91e885eedf97a9dfe8

 quartz/util/ctx.ts

@@ -7,6 +7,8 @@
  output: string
  serve: boolean
  port: number
  wsPort: number
  remoteDevHost?: string
  concurrency?: number
}