变更摘要

该 PR 为文档同步更新：runtime 仓 issue768（PR 3919）已将 stdout 日志环境变量从 ASCEND_SLOG_PRINT_TO_STDOUT 改名为 ASCEND_LOG_PRINT_TO_STDOUT，本次同步修改 docs 仓内对该变量的引用与使用示例，并在目录中补充废弃变量条目。涉及 docs/zh/env-vars/README.md 与 docs/zh/ops-lib/appendix/faq_get_aclnn_call_logs.md 两个文件，共 4 处改动（新增 4 行、删除 3 行）。废弃周期为 9.2.0 标记废弃，13.0.0（N+4 major 版本）资料与代码一并删除。

主要改动

• 日志目录链接更新：docs/zh/env-vars/README.md 日志目录中原指向旧变量文档的链接改为指向新变量 ASCEND_LOG_PRINT_TO_STDOUT 的文档。
• 新增废弃变量条目：docs/zh/env-vars/README.md 目录中新增 ASCEND_SLOG_PRINT_TO_STDOUT（废弃） 条目，指向 runtime 仓 ASCEND_SLOG_PRINT_TO_STDOUT_deprecated.md；该变量虽已声明废弃但兼容期内仍生效，保留条目便于存量用户查阅，词条文本与目标文档一级标题保持一致。
• 使用示例改名：docs/zh/ops-lib/appendix/faq_get_aclnn_call_logs.md 中文本说明与 bash 示例里的变量名由旧名 ASCEND_SLOG_PRINT_TO_STDOUT 改为新名 ASCEND_LOG_PRINT_TO_STDOUT。

Hi @GuoWenbo, welcome to submitting your first PR to docs!

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🤖 本次改动均为数据 / 生成 / 二进制文件（如测试用例、锁文件、媒体资源），没有可审查的代码逻辑，已跳过 AI 代码审查。

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compile

AI Declaration Check Failed

@GuoWenbo, AI declaration is not compliant. AI tool: Claude

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AI Declaration Check Failed

@GuoWenbo, AI declaration is not compliant. AI tool: Claude

Please check:

1. The AI tool and model declared in the PR description must be real.
2. Commit messages must include the AI model, and it must be consistent with the PR description. ⚠️

/lgtm

/approve