Test Jinja Error

Hello,

In the https://catalog.workshops.aws/proton/en-US/module-1/services/define-the-service-instance-infrastructure part of test jinja, you don't show the expected results when running the script, and it fails on my side:

```
python3 -m unittest discover -s .

E
======================================================================
ERROR: test_jinja (unittest.loader._FailedTest)
----------------------------------------------------------------------
ImportError: Failed to import test module: test_jinja
Traceback (most recent call last):
File "/home/linuxbrew/.linuxbrew/opt/python@3.10/lib/python3.10/unittest/loader.py", line 436, in _find_test_path
module = self._get_module_from_name(name)
File "/home/linuxbrew/.linuxbrew/opt/python@3.10/lib/python3.10/unittest/loader.py", line 377, in _get_module_from_name
__import__(name)
File "/home/ubuntu/environment/proton/aws-proton-workshop/test_jinja.py", line 13, in
class TestJinja(unittest.TestCase):
File "/home/ubuntu/environment/proton/aws-proton-workshop/test_jinja.py", line 21, in TestJinja
conf = YamlLintConfig('{\
File "/home/ubuntu/environment/proton/aws-proton-workshop/venv/lib/python3.10/site-packages/yamllint/config.py", line 45, in __init__
self.validate()
File "/home/ubuntu/environment/proton/aws-proton-workshop/venv/lib/python3.10/site-packages/yamllint/config.py", line 148, in validate
self.rules[id] = validate_rule_conf(rule, self.rules[id])
File "/home/ubuntu/environment/proton/aws-proton-workshop/venv/lib/python3.10/site-packages/yamllint/config.py", line 189, in validate_rule_conf
raise YamlLintConfigError(
yamllint.config.YamlLintConfigError: invalid config: option "spaces" of "indentation" should be in (, 'consistent')

----------------------------------------------------------------------
Ran 1 test in 0.000s

FAILED (errors=1)
```