Update the youtube link for druid presentations page

[AlbericByte]

Fixes #14240

Description

Update the druid video link from the official youtube channel

Fixed the bug ...

Update the druid video link to valid link

Release note

Update the druid video link to valid link

Key changed/added classes in this PR

• papers-and-talks.md

This PR has:

• been self-reviewed.
• using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.