Update figures for paper

[Robinlovelace]

• [x] National map
• [x] Figure 2 can be found here: https://github.com/cyipt/actdev/blob/main/data-small/scenario-overview.png

[Robinlovelace]

Heads-up @joeytalbot I'm working on this and looking for the .png figures now...

[Robinlovelace]

Good news, I found the issue: https://github.com/cyipt/actdev/issues/184

[Robinlovelace]

Updated figure at 300 dpi: