Typo in example: speach -> speech

[mandel]

---

Status

READY

Description

Typo in an example that appears in the documentation.

Impacted Areas in Library

Example

Which issue(s) does this pull-request fix?

Any special notes for your reviewer?

---

Checklist

• [ ] Automated tests exist
• [ ] Updated Package Requirements (if required, and with maintainers' approval)
• [ ] Local unit tests performed
• [ ] Documentation exists [link]()
• [ ] Local pre-commit hooks performed
• [ ] Desired commit message set as PR title and description set above
• [ ] Link to relevant GitHub issue provided

[coveralls]

coverage: 95.926%. remained the same when pulling 13e3683d70f2efc071c0b71d8f71bf807835cb40 on mandel:typo into e6bf85cca53ea1fb81c29d97dc3f3d08be235e46 on IBM:main.