message: Fix typo in argument name.
diff: @@ -70,7 +70,7 @@ If you are using Rust, there is [cargo_metadata] crate.
  # Information about build
  -When passing `--message=format=json`, Cargo will output the following
  +When passing `--message-format=json`, Cargo will output the following
  information during the build:
  * compiler errors and warnings,
  