doc: code example contains errors in crypto api

[JBaczuk]

📗 API Reference Docs Problem

• Version: 16.1.0

• Platform: N/A

• Subsystem: crypto

Location

Section of the site where the content exists

Affected URL(s):

• https://nodejs.org/api/crypto.html#crypto_ecdh_setpublickey_publickey_encoding

Description

Concise explanation of the problem

const {
  createECDH,
  createHash,
} = await crypto('crypto');

Should be

const {
  createECDH,
  createHash,
} = await import('crypto');

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