Add YouTube and Reddit links to docs footer socials

[Copilot]

The docs footer social links were missing FalkorDB’s YouTube and Reddit entries. This update adds both links in the Mintlify site config so they render alongside existing social channels.

• Config updates (docs.json)
  • Added youtube and reddit to footer.socials.
  • Kept all existing social entries unchanged.

"footer": {
  "socials": {
    "github": "https://github.com/FalkorDB/FalkorDB",
    "x": "https://x.com/FalkorDB",
    "linkedin": "https://www.linkedin.com/company/falkordb",
    "discord": "https://discord.com/invite/6M4QwDXn2w",
    "youtube": "https://www.youtube.com/@falkordb",
    "reddit": "https://www.reddit.com/r/falkordb/"
  }
}

• Fixes add reddit and youtube to docs.json footer #546

[Copilot]

Pull request overview

Adds missing YouTube and Reddit social links to the FalkorDB docs site footer configuration so they render alongside existing social channels in Mintlify.

Changes:

• Added youtube and reddit entries under footer.socials in docs.json.
• Preserved existing footer social link entries while maintaining valid JSON formatting.

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