feat : dropdown header description

[BaskarMitrah]

Description

Added the description in the header dropdown box

Test URL

Previous : https://stage--adp-devsite-stage--adobedocs.aem.page/express/embed-sdk/docs/guides/
Updated : https://feat-dropdown-header-description--adp-devsite-stage--adobedocs.aem.page/express/embed-sdk/docs/guides/

Fix

[aem-code-sync]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed.
In case there are problems, just click a checkbox below to rerun the respective action.

• Re-run PSI checks
• Re-sync branch

Commits

• b4e79ef ✅ (latest)
• 62d2948 ✅

[aem-code-sync]

	Page	Scores	Audits	Google
📱	/express/embed-sdk/docs/guides/
🖥️	/express/embed-sdk/docs/guides/

[melissag-ensemble]

Waiting Pat's feedback in team channel: https://adobeio.slack.com/archives/C06M1C7UBV3/p1765206998012349?thread_ts=1765191507.080239&cid=C06M1C7UBV3

looks good! Just waiting for @timkim 's suggestion on sub-identing icons (?)

[timkim]

So the syntax for the description should be something like this in the config.md:

        - [v4 Reference](v4/index.md) 
            - 🟢 Current version
        - [v3 Reference](v3/reference/index.md) 
            - 🔴 Deprecated
        - [v2 Reference](v2/reference/index.md) 
            - 🪦 End of Life May 2025
        - [v1 Reference](v1/reference/index.md) 
            - 🪦 End of Life May 2025