Update sl-faqs.md (#4956)

Found a bug in the faq

@mirnawong1  -- do we need to make changes anywhere else?

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website/docs/docs/use-dbt-semantic-layer/sl-faqs.md

@@ -132,8 +132,8 @@ Read our [Quickstart](/docs/use-dbt-semantic-layer/quickstart-sl) for more infor
 
 Beginning in March 2024, the dbt Semantic Layer will offer two layers of caching:
 
-- The result cache which is a Redis cache.
-- A declarative cache which lives in your data platform.
+- The result cache, which caches query results in the data platform so that subsequent runs of the same query are faster.
+- A declarative cache which also lives in your data platform.
 
 </expandable>