[DOCS] Update GX Cloud Docs to Reflect UI Updates

[kwcanuck]

In this Slack conversation, @annabarr indicated that "a release (was pushed) this morning for pre-loading data asset schemas." As a result of this change, the GX Cloud documentation needed updating. Specifically, Manage Data Assets. This PR implements the necessary changes

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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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.65%. Comparing base (ec94a23) to head (d292d31).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #9729      +/-   ##
===========================================
- Coverage    82.66%   82.65%   -0.01%     
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  Files          512      512              
  Lines        46662    46662              
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- Hits         38571    38569       -2     
- Misses        8091     8093       +2     

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3.9 spark	?
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[Shinnnyshinshin]

LGTM. Tagging @annabarr in case any of the wording should be changed.

[Rachel-Reverie]

LGTM

[annabarr]

Approved pending final edit!