Update supported-data-platforms.md (#5049)

There was a mistyped section on the page supported data platforms page.
I've added what I _assume_ is the intended sentence, but open to
alternative copy (or just removing point 6 entirely).

## What are you changing in this pull request and why?
Minor copy changes to the 'supported data platforms' page.

## Checklist
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Adding or removing pages (delete if not applicable):
None of these were applicable - minor copy changes only.

website/docs/docs/supported-data-platforms.md

@@ -30,8 +30,8 @@ There are two types of adapters available today:
 1. Does it work?
 2. Does anyone "own" the code, or is anyone liable for ensuring it works?
 3. Do bugs get fixed quickly?
-4. Does it stay up-to-date with new Core features?
+4. Does it stay up-to-date with new dbt Core features?
 5. Is the usage substantial enough to self-sustain?
-pendency on this library?
+6. Do other known projects depend on this library?
 
-</details>
+</details>