Some code examples for the AI-powered transpiler passes are wrong

[cbjuan]

URL to the relevant documentation

A couple of examples added/modified in #2257 are wrong because of typos or wrong imports.

Opening a PR to fix them

Select all that apply

• [ ] typo
• [x] code bug
• [ ] out-of-date content
• [ ] broken link
• [ ] other

Describe the fix.

Remove a comma in one example, add a comma in another one, fix an import.