refine concept feature PR

malphi commented 4 years ago

提交 PR 前请先自查以下内容：

在完成项的 [ ] 内填入 x，如：- [x]

[ ] 我认可本书的版权信息：本书著作权归属于 ServiceMesher 社区，我将保留对所修改内容的署名权。
[ ] 我已阅读参与贡献说明，并加入了 istio-handbook-wg GitHub team。
[ ] 我已修改 PR 的标题格式（新增内容 PR 的标题格式为：add: 文档标题，修改已有内容 PR 的标题格式为 update：文档标题）。
[ ] 我已在该 PR 已指明解决的 issue 链接：issue#1。
[ ] 我已参考 PR#186 文章内容的格式。
[ ] 我已阅读并保证所提交 PR 符合写作规范。

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mesher-bot commented 4 years ago

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servicemesher / istio-handbook

refine concept feature PR #283

提交 PR 前请先自查以下内容：