Added console method of image swapping to docs

[nathan-weinberg]

Description

We detail how to edit images via make targets, thought we might want to add the console method as well.

Happy to move the screenshot elsewhere in the repo, wasn't sure what the preferred location might be 😄

Dependencies

n/a

Checklist

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (714df94) 55.69% compared to head (67ce298) 55.69%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #446   +/-   ##
=======================================
  Coverage   55.69%   55.69%           
=======================================
  Files          47       47           
  Lines        6063     6063           
=======================================
  Hits         3377     3377           
- Misses       2447     2448    +1     
+ Partials      239      238    -1     

Flag	Coverage Δ
unittests	55.69% <ø> (ø)

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see 1 file with indirect coverage changes

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[jotak]

thanks @nathan-weinberg !
/lgtm
/approve

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