[README] use stable link instead of version-specific (#3676)

README.md

@@ -9,8 +9,7 @@ JuMP is a domain-specific modeling language for [mathematical optimization](http
 embedded in [Julia](https://julialang.org/). You can find out more about us by
 visiting [jump.dev](https://jump.dev).
 
-
-**Latest Release**: [![version](https://juliahub.com/docs/JuMP/DmXqY/1.19.0/version.svg)](https://juliahub.com/ui/Packages/JuMP/DmXqY/1.19.0) (`release-1.0` branch):
+**Latest Release**: [![version](https://juliahub.com/docs/General/JuMP/stable/version.svg)](https://juliahub.com/ui/Packages/General/JuMP) (`release-1.0` branch):
   * Installation via the Julia package manager:
     * `import Pkg; Pkg.add("JuMP")`
   * Get help:

docs/src/developers/checklists.md

@@ -30,7 +30,6 @@ done in the same commit, or separately. The last commit should have the message
        using a `workflow_dispatch` trigger to check for any changes in JuMP that
        broke extensions.
  - [ ] Change the version number in `Project.toml`
- - [ ] Update the links in README.md
  - [ ] The commit messages in this PR do not contain `[ci skip]`
 
 ## The release