XS✔ ◾ Update rule.md "use-the-best-email-templates"

[tiagov8]

cc @Tanya-Leahy @leahy268

1. What triggered this change? (PBI link, Email Subject, conversation + reason, etc)

@adamcogan on Teams

2. What was changed?

Moved table up and improved headings

3. Did you do pair or mob programming (list names)?

no

[github-actions[bot]]

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