message: add comment about static prefix on S3 bucket
diff: @@ -57,4 +57,8 @@ pub const BUILD_VERSION: &str = concat!(
  );
  /// Where rustdoc's static files are stored in S3.
  +/// Since the prefix starts with `/`, it needs to be referenced with a double slash in
  +/// API & AWS CLI.
  +/// Example:
  +/// `s3://rust-docs-rs//rustdoc-static/something.css`
  pub const RUSTDOC_STATIC_STORAGE_PREFIX: &str = "/rustdoc-static/";
  