Updated go.md bash example file

[Exar04]

Test output in go is in this format.

therefore we should be checking for --- PASS instead of PASS
if we do PASS then all the strings that have pass string will return true which is wrong

if (output === undefined) return when its not actual testCase structure then output is undefined
Idk how that works, but adding this solves the error.

rm go.mod removing go.mod before node testoutput.js because if testoutput.js fails all the test files won't get deleted and we need to manually remove go.mod.