Remove broken link from Understand How Flyte Handles Data page

[neverett]

Docs link

Changed docs link: https://flyte--4518.org.readthedocs.build/en/4518/concepts/data_management.html#bringing-in-your-own-datastores-for-raw-data

I removed the link from "data persistence layer".

Describe your changes

Removes broken link from "Bringing in Your Own Datastores for Raw Data" section of "Understand How Flyte Handles Data" docs page.

Check all the applicable boxes

• All new and existing tests passed.
• All commits are signed-off.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (475e9d0) 59.37% compared to head (e36cefe) 59.40%.

❗ Current head e36cefe differs from pull request most recent head 948bb29. Consider uploading reports for the commit 948bb29 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4518      +/-   ##
==========================================
+ Coverage   59.37%   59.40%   +0.02%     
==========================================
  Files         638      638              
  Lines       53961    53957       -4     
==========================================
+ Hits        32039    32052      +13     
+ Misses      19391    19376      -15     
+ Partials     2531     2529       -2     

Flag	Coverage Δ
unittests	59.40% <ø> (+0.02%)	⬆️

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[neverett]

@eapolinario I'm not sure what the codecov/project test is, but it's the only one that's not passing -- is there something I need to do to get it to pass?