fix image and link on /refi/ page

[corwintines]

Description

• Reduce size of image
• Change link to https://capitalinstitute.org/8-principles-regenerative-economy/ in intro paragraph

[gatsby-cloud]

✅ ethereum-org-website-dev deploy preview ready

• Deploy preview
• Build logs · 29m build time

[nloureiro]

Besides the fine-tuning of the image, should we add a caption to the image with credits? Where does this image come from?

@jmcook1186 probably, you can help on this one. 😀

[nloureiro]

@corwintines I change the image to 450x450px, but on the dev preview it's not showing. Can you take a look?

[wackerow]

This has lost image quality when previewing, which may be related to pixel ratios. Do we need to downsize the image file or could we just put a max size on it when rendered?

[corwintines]

I think since this is done through markdown, we might need to have it be 450px if that is our goal dimensions. Ill see if I can do this without losing quality.

[corwintines]

I pushed a better res version of the 450x450px image. I think this is ready.