Replace image file in /docs/images/ directory and update the svg edit to reflect proposal #3927.

[ryoari]

Replace image file in /docs/images/ directory and update the svg editing document to reflect the change to package syntax from proposal #3927

Closes #3969

[jonmeow]

In quicksort, we should probably keep the same formatting (font and colors) that was used previously. Can you please restore the changes there to those?

[jonmeow]

Note, the other two look good.

[ryoari]

yeah looks a bit odd, I am trying to fix it while keeping the updated carbon syntax, would you mind another iteration or do you feel consistent would be better?

[jonmeow]

I think we really would like to keep a consistent look-and-feel. We're trying to keep a similar look as with GitHub (visible in snippets.md, in particular the dark default theme) so that it "feels" like other code snippets that would be seen in GitHub.

Note too, there's already a skew with snippets.md (the C++ parts of snippets was changed without updating images); that's a separate issue though, and this does fix #3969.

[jonmeow]

Thanks for the edits here.