comment isWsl test cases

Author: 3ventic

internal/login/login_test.go

@@ -165,8 +165,13 @@ func TestIsWsl(t *testing.T) {
 	a := assert.New(t)
 
 	var (
+		// syscall.Utsname.Release value on various systems
+
+		// Ubuntu 20.04 on WSL2 on Windows 10 x64 20H2
 		ubuntu20Wsl2 = [65]int8{52, 46, 49, 57, 46, 49, 50, 56, 45, 109, 105, 99, 114, 111, 115, 111, 102, 116, 45, 115, 116, 97, 110, 100, 97, 114, 100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
-		archReal     = [65]int8{53, 46, 49, 49, 46, 49, 49, 45, 97, 114, 99, 104, 49, 45, 49, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+		// Arch Linux on baremetal on 2021-04-02
+		archReal = [65]int8{53, 46, 49, 49, 46, 49, 49, 45, 97, 114, 99, 104, 49, 45, 49, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
 	)
 
 	result := isWsl(util.Syscall{