SFDX Auth url completed

examples/sfdx_url.rs

@@ -14,10 +14,9 @@
 //! - Export the SFDX Auth url from the CLI
 //! ```bash
 //! sf org auth show-sfdx-auth-url --target-org my-org-alias
-//! # or
-//! sf org auth show-sfdx-auth-url --target-org my-org-alias --json > sfdx_auth_url.json
 //! ```
-//!
+//! - Copy the sfdxAuthUrl and import it into your application in a save and secure manner,
+//! and never hardcode it!  (like in the example below)
 use oauth2::http::header::AUTHORIZATION;
 use oauth2::http::{HeaderMap, HeaderValue};
 use rustsf_auth::credentials::SalesforceCredentials;