[zh] context-propagation.md: use consistent terms

[chalin]

Originally posted by @reyang in https://github.com/open-telemetry/opentelemetry.io/pull/4536#discussion_r1627982367

It seems we have different translations for the same word, would be good to keep consistency. https://github.com/open-telemetry/opentelemetry.io/blob/43fea35b57456a18a0ef4b78072819f76a1c4fdd/content/zh/docs/what-is-opentelemetry.md?plain=1#L9