[zh-cn] Improving six translation phrases.

[Wetoria]

Keep all translation of Amend to be same.

And 修正 is more meaningful than 修改.

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修改 means modify some thing.

修正 means modify some thing to be correctly.

When I attempted to find amend command in vscode, I found 提交(修改) in the menu. I was confused about it.

What means 修改? Is there any thing can be modified?

What I wanna do is to add some careless changes, to make my last commit be correct.

I'm not a good user of English, But I found "command.commitAllAmendNoVerify": "全部提交(修正，不验证)" in vscode.git.i18n.json .

So I opened this pull request.

[sam951013]

你可以在這個儲存庫（vscode -loc)創建issue。