Fix changeset formatting (Prettier)

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: konard

js/.changeset/add-qwen-coder-support.md

@@ -1,5 +1,5 @@
 ---
-"agent-commander": minor
+'agent-commander': minor
 ---
 
 Add Qwen Code CLI support