docs: clean up prose flagged by the shared Vale rules (#4596)

The existing docs have 254 findings from our shared Vale rules.
Contributors would otherwise inherit these when editing the same lines.

Clean up the prose across 80 pages: correct product names and a repeated
word, simplify a few phrases, and replace dashes with punctuation that
fits each sentence. The pinned Vale scan now reports zero findings, with
no suppressions.

docs/web/feature-engineering/data-evolution.mdx

@@ -111,7 +111,7 @@ The expressions above are evaluated once, as part of the call. For other workflo
   expression and leaves the column empty, so you choose when the work happens.
   Use it when you want to schedule the computation separately.
 - On LanceDB Enterprise, [Geneva](/geneva) fills a column with Python, for
-  values SQL cannot express -- an embedding, a model call, an image decode.
+  values SQL cannot express: an embedding, a model call, an image decode.
 
 {/*
 Draft for the Functions release. Replaces the Geneva item in the list above: