Fix the broken image of okta login on readme

[surajeaton]

Fixes # .

Changes proposed in this Pull Request:

• Moved out okta login image to media directory

Screenshots / Screen Recording (if applicable)

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[github-actions]

Thank you for the master pull request. 👍 Please be sure this pull request is for the master branch. The master branch is used for items that are ready for publishing. The dev branch is our working branch for all issues and enhancements. Please read our Contributing Guidelines for more information.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.64%. Comparing base (5b9a6ff) to head (c3d0b18).
Report is 10 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #643   +/-   ##
=======================================
  Coverage   72.64%   72.64%           
=======================================
  Files          89       89           
  Lines        1126     1126           
  Branches      247      247           
=======================================
  Hits          818      818           
  Misses        130      130           
  Partials      178      178           

Flag	Coverage Δ
unittests	72.64% <ø> (ø)

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[github-actions]

Visit the preview URL for this PR (updated for commit c3d0b18):

https://blui-react-login--pr643-dev-ksn2cqpa.web.app

_{(expires Fri, 13 Sep 2024 19:43:29 GMT)}

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