Fix: Address clippy doc indentation warning

Author: alessandrobologna

src/lib.rs

@@ -20,8 +20,8 @@
 //! special fields are:
 //!
 //! * `otel.name`: Override the span name sent to OpenTelemetry exporters.
-//!    Setting this field is useful if you want to display non-static information
-//!    in your span name.
+//!   Setting this field is useful if you want to display non-static information
+//!   in your span name.
 //! * `otel.kind`: Set the span kind to one of the supported OpenTelemetry [span kinds].
 //! * `otel.status_code`: Set the span status code to one of the supported OpenTelemetry [span status codes].
 //! * `otel.status_message`: Set the span status message.