fix syntax errors on e1t5

@test "[TASK 5] test 3: should print 'User not found' for input 'root1'" {

    run ./task-5.sh <<< "root1"

    assert_output --partial 'User not found'

}

@test "[TASK 5] test 4: should print 'User nobody found' for input 'nobody'" {

    run ./task-5.sh <<< "nobody"

    assert_output --partial 'User nobody found'

}

@test "[TASK 5] test 5: should print 'User not found' for input 'function'" {

    run ./task-5.sh <<< "function"

    assert_output --partial 'User not found'

}