docs(changelog): be more verbose about offline mode breaking change

Author: mrl5

CHANGELOG.md

@@ -21,7 +21,7 @@ alongside drivers for other proprietary databases, with the goal to support full
 
 If interested, please email your inquiry to [email protected].
 
-The offline mode for the queries has been changed to use a separate file per `query!()` invocation,
+The offline mode for the queries (CLI flag `--merged`) has been changed to use a separate file per `query!()` invocation,
 which is intended to reduce the number of conflicts when merging branches in a project that both modified queries.
 See [[#2363]] for details.