doc,n-api: fix metadata for napi_create_threadsafe_function

PR-URL: #28410
Refs: #27791
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Michael Dawson <[email protected]>

Author: richardlau

doc/api/n-api.md

@@ -4659,7 +4659,7 @@ prevent the event loop from exiting. The APIs `napi_ref_threadsafe_function` and
 added: v10.6.0
 napiVersion: 4
 changes:
-  - version: v10.17.0
+  - version: REPLACEME
     pr-url: https://github.com/nodejs/node/pull/27791
     description: Made `func` parameter optional with custom `call_js_cb`.
 -->