chore(EntityHeader): Update documentation for the new Entity header

[bhashkarsharma]

Description

This PR updates the documentation to match the new Entity header. It is related to another PR on the docs-website.

Reviewer Notes

I noticed some things while making these changes, which can be improved upon:

• The screenshots in the section are outdated. I searched for the app mentioned (hello-app-1), to update the screenshot, but wasn't able to find it.
• The search redirect link in the first line does not work as expected anymore.
• The metadata widget could be independent or might show up inside the '...' button (refer screenshots below).

Related Issue(s) / Ticket(s)

If there are any related GitHub Issues or JIRA tickets, add links to them here.

• issue

Screenshot(s)

New header with metadata and tags widgets:

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git commit -m "chore: adjusting config and content"

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git commit -m "fix: typo and prop error in the code of conduct"

Use feat

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git commit -m "feat(media): creating a video landing page"

[CLAassistant]

All committers have signed the CLA.

[bhashkarsharma]

I have signed the CLA.

[nr-opensource-bot]

🎉 This PR is included in version 1.96.3 🎉

The release is available on GitHub release

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