fixes #42: s/发生错误是/发生错误时/g in chapter 26.9

Signed-off-by: walteryang <walteryang47@users.noreply.github.com>
fixes #41: fixes all reviewed typos in chapter 23

Signed-off-by: walteryang <walteryang47@users.noreply.github.com>
fixes #7: s/创建EayunOS是/创建EayunOS时/g in chapter 4

Signed-off-by: walteryang <walteryang47@users.noreply.github.com>