docs(cache): update datasource -> dataset

[nytai]

Fixes a legacy reference to datasource which should be dataset now

SUMMARY

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #21670 (c031fe0) into master (61bd696) will decrease coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #21670      +/-   ##
==========================================
- Coverage   66.85%   66.82%   -0.03%     
==========================================
  Files        1798     1798              
  Lines       68827    68827              
  Branches     7333     7333              
==========================================
- Hits        46011    45997      -14     
- Misses      20931    20951      +20     
+ Partials     1885     1879       -6     

Flag	Coverage Δ
hive	52.91% <ø> (ø)
javascript	53.16% <ø> (-0.04%)	⬇️
mysql	78.23% <ø> (ø)
postgres	78.29% <ø> (ø)
presto	52.81% <ø> (ø)
python	81.42% <ø> (ø)
sqlite	76.79% <ø> (ø)
unit	50.92% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...rd/components/nativeFilters/FilterBar/keyValue.tsx	18.51% <0.00%> (-22.23%)	⬇️
...board/components/nativeFilters/FilterBar/index.tsx	60.43% <0.00%> (-5.76%)	⬇️

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