Getting started documentation missing links

[cresvi]

Checklist:

• I've included steps to reproduce the bug.
• I've included the version of argo rollouts.

Describe the bug

In the documentation, the Getting started menu and Getting Stared page are missing the AWS AppMesh getting started page.

The Getting started menu is also missing the Multiple Provider getting started page.

To Reproduce

Navigate to the Getting Stared page.

Expected behavior

1. A new bullet should be added to the Getting stated page linking to the AWS App Mesh page.
2. Two new entries should be added to the Getting started menu on the left pointing to the AWS App Mesh and Multiple Provider getting started pages.

Screenshots

N/A

Version

N/A

Logs

N/A

Message from the maintainers:

Impacted by this bug? Give it a 👍. We prioritize the issues with the most 👍.