chore: update document

Author: zensh

README.md

@@ -29,6 +29,9 @@ async fn main() {
         .with_target_writer("*", new_writer(tokio::io::stdout()))
         .init();
 
+    // Or use the default:
+    // structured_logger::init();
+
     let kv = ContextLog {
         uid: "user123".to_string(),
         action: "upate_book".to_string(),

src/lib.rs

@@ -44,6 +44,9 @@
 //!         .with_target_writer("*", new_writer(tokio::io::stdout()))
 //!         .init();
 //!
+//!     // Or use the default:
+//!     // structured_logger::init();
+//!
 //!     let kv = ContextLog {
 //!         uid: "user123".to_string(),
 //!         action: "upate_book".to_string(),