message: Update man page
diff: @@ -160,6 +160,11 @@ The output has the following format:
  }
  }
  },
  + /* List of registries to which this package may be published.
  + This is null if not specified. */
  + "publish": [
  + "crates-io"
  + ],
  /* Array of authors from the manifest.
  Empty array if no authors specified.
  */
  