docs: fix stale Quick Flow reference in quick-dev explainer opening

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/explanation/quick-dev.md

@@ -5,7 +5,7 @@ sidebar:
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-`bmad-quick-dev` reduces Quick Flow ceremony: intent in, code changes out, with fewer human-in-the-loop turns without sacrificing quality.
+Intent in, code changes out, with as few human-in-the-loop turns as possible — without sacrificing quality.
 
 It lets the model run longer between checkpoints, then brings the human back only when the task cannot safely continue without human judgment or when it is time to review the end result.
 

docs/zh-cn/explanation/quick-dev.md

@@ -5,7 +5,7 @@ sidebar:
   order: 2
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-`bmad-quick-dev` 减少快速流程的仪式感：输入意图，输出代码变更，减少人机交互轮次，同时不牺牲质量。
+输入意图，输出代码变更，尽可能少的人机交互轮次——同时不牺牲质量。
 
 它让模型在检查点之间运行更长时间，只有在任务无法在没有人类判断的情况下安全继续时，或者需要审查最终结果时，才会让人类介入。