update: Add info about the new clean up feature in ios

[friadev]

List of changes proposed in this PR:

• added info about the new Clean Up feature in iOS that can automatically blur faces and redact information

[github-actions]

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[redoomed1]

Suggested change

	<div class="admonition warning" markdown>
	<p class="admonition-title">Warning</p>
	Don't use Clean Up to remove text, block text out with a fully black box instead.
	</div>
	Otherwise, you can add a shape to fully block out a face or information.
	- Open the **Photos** app and tap the photo you have selected for redaction
	Our warning [against blurring text](../data-redaction.md) also applies here, so we recommend to instead add a black shape with 100% opacity over it. In addition to redacting text, you can also black out any face or object using the **Photos** app.
	- Tap the image you have selected for redaction

This suggestion attempts to remove this admonition while retaining the same information. It also clarifies what a "fully black box" means.

[redoomed1]

I also suggest renaming this section of the page to something like "Redacting Elements in Images" since the Clean Up feature now adds a redaction option that is not limited to blacking out faces/information that the current title indicates.