update broken links to forward to dat-ecosystem

[serapath]

115

@todo

• [ ] update/forward domains to the transitioned dat-ecosystem blog
• [ ] collect links online and request maintainers to update to forward to dat-ecosystem
  • [ ] update this github issue comment
  • [ ] update wikipedia entry

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@info

there are many places online where people still reference broken links from previous times and every time we discover them we should reach out to update those.