Update index.md

docs/dev-tools/backends/index.md

@@ -4,14 +4,14 @@ In addition to asdf plugins, you can also directly install CLIs with some packag
 
 - [asdf](/dev-tools/backends/asdf)
 - [aqua](/dev-tools/backends/aqua)
-- [Cargo](/dev-tools/backends/cargo)
-- [Go](/dev-tools/backends/go) <Badge type="warning" text="experimental" />
-- [NPM](/dev-tools/backends/npm)
-- [Pipx](/dev-tools/backends/pipx)
-- [SPM](/dev-tools/backends/spm) <Badge type="warning" text="experimental" />
-- [Ubi](/dev-tools/backends/ubi)
-- [Vfox](/dev-tools/backends/vfox) <Badge type="warning" text="experimental" />
-- [More coming soon!](https://github.com/jdx/mise/discussions/1250)
+- [cargo](/dev-tools/backends/cargo)
+- [gem](/dev-tools/backends/gem) <Badge type="warning" text="experimental" />
+- [go](/dev-tools/backends/go) <Badge type="warning" text="experimental" />
+- [npm](/dev-tools/backends/npm)
+- [pipx](/dev-tools/backends/pipx)
+- [spm](/dev-tools/backends/spm) <Badge type="warning" text="experimental" />
+- [ubi](/dev-tools/backends/ubi)
+- [vfox](/dev-tools/backends/vfox) <Badge type="warning" text="experimental" />
 
 ::: tip
 If you'd like to contribute a new backend to mise, they're not difficult to write.