testing: lint check on windows failed due to the end of line

[hyangah]

https://github.com/golang/vscode-go/runs/2238398694?check_suite_focus=true

Upstream issue: google/gts#485

/cc @suzmue @pjweinb

[gopherbot]

Change https://golang.org/cl/306610 mentions this issue: .github/workflows: correct lint check condition