Merge pull request #671 from abergmeier/fix_comment

Correct CheckPushPermission comment.
This is a typo fix.

pkg/executor/push.go

@@ -59,7 +59,7 @@ func (w *withUserAgent) RoundTrip(r *http.Request) (*http.Response, error) {
 	return w.t.RoundTrip(r)
 }
 
-// CheckPushPermissionos checks that the configured credentials can be used to
+// CheckPushPermissions checks that the configured credentials can be used to
 // push to every specified destination.
 func CheckPushPermissions(opts *config.KanikoOptions) error {
 	if opts.NoPush {