Breathing space for easier reading

**Page**: https://docs.amplify.aws/cli/graphql-transformer/auth#owner-authorization

**Feedback**:
I often find it really exhausting and tiring to read the docs on authorization, despite having read it multiple times. Every time I return to it - it's always difficult to navigate around. The wall of text without any separation of concern is a contributing factor. Maybe add some spaces in between different topics or a horizontal rule.

Like this
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Here's what I'm talking about: