chore(docs): streamline docs homepage

[dreamorosi]

Description of your changes

This PR streamlines the structure of the homepage to condense some of the section as well as remove some of the tooltip/callouts.

The new style aligns with the style of the Powertools for AWS Lambda (Python) docs homepage.

Related issues, RFCs

Issue number: #2327

Checklist

• My changes meet the tenets criteria
• I have performed a self-review of my own code
• I have commented my code where necessary, particularly in areas that should be flagged with a TODO, or hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my change is effective and works
• The PR title follows the conventional commit semantics

Breaking change checklist

Is it a breaking change?: NO

• I have documented the migration process
• I have added, implemented necessary warnings (if it can live side by side)

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[am29d]

Just a small suggestion to fix the relative link.

[dreamorosi]

Fixed the copy/paste error, thanks for the review!

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud