[7.11] [DOCS] Adds note for data source performance impact (#127184)#127315

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KOTungseth merged 1 commit intoelastic:7.11from KOTungseth:backport/7.11/pr-127184

Mar 9, 2022

+3-1

Commits on Mar 9, 2022

[DOCS] Adds note for data source performance impact (elastic#127184 )
KOTungseth
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