[ON HOLD] Minor UX corrections

[adams85]

Description

• Removes weird image from the "Invite others to collaborate" section on the "Team Management Basics" page
• Replaces screenshot in the "Create a feature flag" section on the "Getting Started" page

Also, updates tutorial app links.

Trello card

https://trello.com/c/U0zLisCq

Notes for QA

What part of the application were affected by the changes?

See PR description.

Requirement checklist

• I have validated my changes on a test/local environment.
• I have tested that the code snippets I added work. (Leave unchecked if there are no new code snippets.)
• I have added my changes to the V1 and V2 documentations.
• I have checked the SNYK/Dependabot reports and applied the suggested changes.
• (Optional) I have updated outdated packages.

[cloudflare-workers-and-pages]

Deploying configcat-docs with    Cloudflare Pages

Latest commit:	254b9ed
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Branch Preview URL:	https://ux-corrections.docs-xmy.pages.dev

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