Update main.tf with proper indenting

[preddy727]

Updated with proper indenting for rules

What does this PR do?

Update main.tf with proper indenting for prometheus rules

Motivation

More

• [x ] Yes, I have tested the PR using my local account setup (Provide any test evidence report under Additional Notes)
• [x ] Yes, I have added a new example under examples to support my PR
• [ x] Yes, I have created another PR for add-ons under add-ons repo (if applicable)
• [x ] Yes, I have updated the docs for this feature
• [x ] Yes, I ran pre-commit run -a with this PR

Note: Not all the PRs required examples and docs except a new pattern or add-on added.

For Moderators

• E2E Test successfully complete before merge?

Additional Notes

[bryantbiggs]

Thanks for the fix!