Windows无法配置考试信息

[LimonHans]

无法配置考试信息，创建考试时和创建后通过set都无法配置。

[dixiatielu]

报错如下：（添加Label）

PS D:\qwquvier> .\qwquiver.exe exam config set Test2_Exam --Label "TST"
panic: runtime error: index out of range [1] with length 1

goroutine 1 [running]:
github.com/qwqcode/qwquiver/cli/cmd.examConfSetRun(0x167b7c0, 0xc0000a2270, 0x1, 0x3)
        /Users/qwqaq/go/src/github.com/qwqcode/qwquiver/cli/cmd/exam.go:126 +0x92e
github.com/spf13/cobra.(*Command).execute(0x167b7c0, 0xc0000a2210, 0x3, 0x3, 0x167b7c0, 0xc0000a2210)
        /Users/qwqaq/go/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:854 +0x2c2
github.com/spf13/cobra.(*Command).ExecuteC(0x167bd00, 0xe397b8, 0x157d020, 0xc000030000)
        /Users/qwqaq/go/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:958 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
        /Users/qwqaq/go/pkg/mod/github.com/spf13/cobra@v1.1.1/command.go:895
github.com/qwqcode/qwquiver/cli/cmd.Execute()
        /Users/qwqaq/go/src/github.com/qwqcode/qwquiver/cli/cmd/root.go:44 +0x38
main.main()
        /Users/qwqaq/go/src/github.com/qwqcode/qwquiver/cli/main.go:12 +0x27