Translate `library/telnetlib.po`

This needs to reach 100% translated.

The rendered version of this file will be available at https://docs.python.org/es/3.14/library/telnetlib.html once translated.
Meanwhile, the English version is shown.

Current stats for library/telnetlib.po:

• Fuzzy: 1
• Percent translated: 94.4%
• Entries: 51 / 54
• Untranslated: 3

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Remember to follow the steps in our Contributing Guide.

打开 library/telnetlib.po，并在编辑翻译前按照链接的 Contributing Guide 操作。解决唯一的 fuzzy 条目并翻译三个未翻译的条目，然后确认文件已达到 100% 翻译，并且渲染后的西班牙语页面不再显示英文版本。