Updates to Governance page to include OETH

[matt-bullock]

I've identified all the copy that needs updating here:

https://www.figma.com/file/JTVKy7SSwEvlUV94iDwDt8/Governance?type=design&node-id=501%3A7316&t=MX9jlGshP2z1XOlW-1

[micahalcorn]

I've taken care of the text here but we'll want to change the logo. I'll make a separate issue for that.