Modeling designs page review (#451)

* Modeling designs page review

* Data modeling designs page review

* Apply suggestions from code review

Co-authored-by: Jessica Wright <[email protected]>

* Updates after review

* updating image

* Apply suggestions from code review

Co-authored-by: Jessica Wright <[email protected]>

* updates after review

* reverting changes from another pr

* reverting changes from another pr

* updates after review

* Apply suggestions from code review

Co-authored-by: Jessica Wright <[email protected]>

* Removing redundant information from index

* removing misleading description

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Co-authored-by: Jessica Wright <[email protected]>

Author: lidiazuin