[Minor] Fix broken link on archived yewstack/yew_router

[Nobilitate]

Problem This is a very minor thing, but many people may search for yew_router and be sent to the old archived Github project. That project links to this repository, but the link is broken since this repository was reorganized into packages.

Steps To Reproduce Steps to reproduce the behavior:

1. Go to https://github.com/yewstack/yew_router
2. Click on the link within "moved to here" at the top of the README
3. Observe a Github 404 page
4. Note that the URL was https://github.com/yewstack/yew/tree/master/yew-router, which is no longer valid.

Expected behavior The link should direct users to https://github.com/yewstack/yew/tree/master/packages/yew-router

Environment: Github

Questionnaire

• [ ] I'm interested in fixing this myself but don't know where to start
• [x] I would like to fix and I have a solution
• [ ] I don't have time to fix this right now, but maybe later

I had already gone to make a PR before realizing the repository was archived. The forked changes are here:

https://github.com/yewstack/yew_router/compare/master...Nobilitate:patch-1?expand=1

[WorldSEnder]

:wave: Thanks for paying attention: It seems I don't have permissions to unarchive the project to fix this, it's rather old. @hgzimmerman may be able to help.

[ranile]

I think @siku2 is the only who can do that. The repository needs to be unarchived for the file to be edited