[DOCS] Document GX Cloud Edit Expectation Suite Name Functionality

[kwcanuck]

DOC-616 requests documentation for editing Expectation Suite names. This PR implements this request.

Definition of done

• PR title is prefixed with one of: [BUGFIX], [FEATURE], [DOCS], [MAINTENANCE], [CONTRIB]
• Appropriate tests and docs have been updated

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[ghost]

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[Rachel-Reverie]

LGTM. It might be nice if we could include the icon for the edit button -- eg, "Click on the Edit (icon) button for the Expectation Suite...." since it is a button rather than a labeled link and it doesn't look like the button has hover text or anything, but I that's a suggestion that you can take or leave. Possibly something to revisit through our Cloud docs once the Cloud UI has settled more and we know the icons for buttons aren't going to be changing.