message: Doc for support multitarget in config
diff: @@ -235,6 +235,12 @@ or running tests for both targets:
  cargo test --target x86_64-unknown-linux-gnu --target i686-unknown-linux-gnu
  ```
  +This can also be specified in `.cargo/config.toml` files.
  +
  +```toml
  +[build]
  +target = ["x86_64-unknown-linux-gnu", "i686-unknown-linux-gnu"]
  +```
  #### New `dir-name` attribute
  