[Documentation]: Fix typo in InspectorControls docs

[ntsekouras]

What?

Randomly came across these docs and noticed some typos in the InspectorControls docs.

[github-actions]

Flaky tests detected in 6614fb0.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/3913640953
📝 Reported issues:

• [Flaky Test] should always expand single line selection #39787 in specs/editor/various/multi-block-selection.test.js
• [Flaky Test] should move the blocks up #39782 in specs/editor/various/block-editor-keyboard-shortcuts.test.js

[Mamaduka]

Thanks, Nik!