fix doc links: rename forge->backend

docs/dev-tools/backends/cargo.md

@@ -3,7 +3,7 @@
 You may install packages directly from [Cargo Crates](https://crates.io/) even if there
 isn't an asdf plugin for it.
 
-The code for this is inside of the mise repository at [`./src/forge/cargo.rs`](https://github.com/jdx/mise/blob/main/src/forge/cargo.rs).
+The code for this is inside of the mise repository at [`./src/backend/cargo.rs`](https://github.com/jdx/mise/blob/main/src/backend/cargo.rs).
 
 ## Dependencies
 

docs/dev-tools/backends/go.md

@@ -3,7 +3,7 @@
 You may install packages directly via [go install](https://go.dev/doc/install) even if there
 isn't an asdf plugin for it.
 
-The code for this is inside of the mise repository at [`./src/forge/go.rs`](https://github.com/jdx/mise/blob/main/src/forge/go.rs).
+The code for this is inside of the mise repository at [`./src/backend/go.rs`](https://github.com/jdx/mise/blob/main/src/backend/go.rs).
 
 ## Dependencies
 

docs/dev-tools/backends/index.md

@@ -13,5 +13,5 @@ In addition to asdf plugins, you can also directly install CLIs with some packag
 
 ::: tip
 If you'd like to contribute a new backend to mise, they're not difficult to write.
-See [`./src/forge/`](https://github.com/jdx/mise/tree/main/src/forge) for examples.
+See [`./src/backend/`](https://github.com/jdx/mise/tree/main/src/backend) for examples.
 :::

docs/dev-tools/backends/npm.md

@@ -3,7 +3,7 @@
 You may install packages directly from [npmjs.org](https://npmjs.org/) even if there
 isn't an asdf plugin for it.
 
-The code for this is inside of the mise repository at [`./src/forge/npm.rs`](https://github.com/jdx/mise/blob/main/src/forge/npm.rs).
+The code for this is inside of the mise repository at [`./src/backend/npm.rs`](https://github.com/jdx/mise/blob/main/src/backend/npm.rs).
 
 ## Dependencies
 

docs/dev-tools/backends/pipx.md

@@ -7,7 +7,7 @@ You may install python packages directly from:
 - Github
 - Http
 
-The code for this is inside of the mise repository at [`./src/forge/pipx.rs`](https://github.com/jdx/mise/blob/main/src/forge/pipx.rs).
+The code for this is inside of the mise repository at [`./src/backend/pipx.rs`](https://github.com/jdx/mise/blob/main/src/backend/pipx.rs).
 
 ## Dependencies
 

docs/dev-tools/backends/ubi.md

@@ -2,7 +2,7 @@
 
 You may install Github Releases and URL packages directly using [ubi](https://github.com/houseabsolute/ubi) backend.
 
-The code for this is inside of the mise repository at [`./src/forge/ubi.rs`](https://github.com/jdx/mise/blob/main/src/forge/ubi.rs).
+The code for this is inside of the mise repository at [`./src/backend/ubi.rs`](https://github.com/jdx/mise/blob/main/src/backend/ubi.rs).
 
 ## Dependencies