Fix typo in warning (#841) [ci skip]

Editor assessment

The header `chore(runtime-core): fix typo in warning (#841) [ci skip]` is understandable and accurate, correctly using the `chore` type (the scope `runtime-core` correctly identifies the affected area). It is, however, purely mechanical: the reader learns what moved or was adjusted but nothing about motivation, trade-offs, or risk, and the message supplies no such context. Style is otherwise clean — imperative mood, no trailing period, sensible length, no ticket junk in the subject. Valid, clear, and structurally sound, yet the teaching value is low because the entry stops at restating the change.