docs: document sdk on version nodes - #7035

Running Vale across on the following files affected by this PR:

- api-playground/sdk-reference-setup.mdx

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api-playground/sdk-reference-setup.mdx:
	- 4:138    Use 'SDK' instead of 'sdk'.
	- 60:20    Use 'SDK' instead of 'sdk'.
	- 61:27    Use 'TypeScript' instead of 'typescript'.


Found 3 suggested changes across 1 files in 1337.14ms