Telemetry docs: recipient, default-on/opt-out, and instance-name-in-route aren't documented (README says 'no personal data')

从 README.md 中的 Telemetry 部分开始，并对照 src/utils/sendTelemetry.ts、src/config/env.config.ts、src/api/guards/telemetry.guard.ts 和 src/api/abstract/abstract.router.ts 验证其行为。更新文档，涵盖接收方、默认启用行为和选择退出变量，以及 route 的内容（包括实例名称）；当 README.md 与所引用的代码一致时即表示完成。

Hi, and thank you for Evolution API.

While reading the telemetry code I noticed a small gap between what the README states and what the code does, and I wanted to flag it kindly in case it's helpful.

What the README says (README.md, "## Telemetry"):

Evolution API collects anonymous telemetry data (routes used, most accessed routes, API version) to help improve the service. No sensitive or personal data is collected.

What I observed in the code (at commit fa09d37):

• src/utils/sendTelemetry.ts POSTs { route, apiVersion, timestamp } to https://log.evolution-api.com/telemetry by default (when TELEMETRY_URL is unset).
• src/config/env.config.ts (~L880–882): TELEMETRY.ENABLED defaults to true when TELEMETRY_ENABLED is unset — i.e. telemetry is on by default (opt-out).
• src/api/guards/telemetry.guard.ts passes req.path as the route; src/api/abstract/abstract.router.ts (~L22–24) builds instance routes as <path>/:instanceName, so the transmitted route includes the user-chosen instance name.

Why I'm raising it: the disclosure is accurate in spirit, but as written it doesn't mention (a) the recipient endpoint (log.evolution-api.com), (b) that telemetry is on by default and how to disable it (TELEMETRY_ENABLED=false), or (c) that the instance name travels inside route. The last point sits a little uneasily with "no sensitive or personal data is collected."

Suggested fix: a short README addition naming the recipient, the default-on behaviour + the opt-out env var, and clarifying what route contains. I'd be glad to open a small PR against develop if you'd like.

For transparency: I used AI assistance to help find and draft this; I verified every file and line against the current source myself.

Thank you!