* First draft of the code search tutorial
* Remove the docstring of the textify function
* Self-review changes
* Fix image path
* Add notebook link
* Add code search to the "Demos" section
* Update the code search image
* Update qdrant-landing/content/demo/demo-4.md
Co-authored-by: Mike Jang <michael.jang@qdrant.io>
* Apply changes from the code review
* Extend the jina embeddings description
* Update the notebook link
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Co-authored-by: Mike Jang <michael.jang@qdrant.io>
