docs: added sponsorship link

_posts/2024-09-12-v5-release.md

@@ -98,6 +98,6 @@ Express v5 removes a number of deprecated API method signatures, many of which w
 
 ## Our work is just starting
 
-We see the v5 release as a milestone toward an Express ecosystem that's a stable and reliable tool for companies, governments, educators, and hobby projects.  It is our commitment as the new stewards of the Express project to move the ecosystem forward with this goal in mind. If you want to support this work, which we do on a volunteer basis, please consider supporting the project and its maintainers via our sponsorship opportunities (@TODO link here).  
+We see the v5 release as a milestone toward an Express ecosystem that's a stable and reliable tool for companies, governments, educators, and hobby projects.  It is our commitment as the new stewards of the Express project to move the ecosystem forward with this goal in mind. If you want to support this work, which we do on a volunteer basis, please consider supporting the project and its maintainers via [our sponsorship opportunities](https://opencollective.com/express).  
 
 We have an [extensive working backlog](https://github.com/expressjs/discussions/issues/266) of tasks, PRs, and issues for Express and dependencies.  Naturally, we expect developers will continue to report issues to add to this backlog and open PRs moving forward, and we'll continue to collaborate with the community to triage and resolve them.  We look forward to continuing to improve Express and making it useful for its users across the world.