Fix formatting issues.

src/lib.rs

@@ -74,6 +74,7 @@
 //! ```
 //!
 //! ## Overview of this library:
+//!
 //! ### Entry point
 //! The entry point for this library is the [`SecretService`] struct. Creating an instance
 //! of this structure will initialize the dbus connection and create a session with the
@@ -118,7 +119,7 @@
 //! In addition, `set` and `get` actions are available for secrets contained in an `Item`.
 //!
 //! ## Headless usage
-//! 
+//!
 //! If you must use the secret-service on a headless linux box,
 //! be aware that there are known issues with getting
 //! dbus and secret-service and the gnome keyring
@@ -130,7 +131,7 @@
 //! [Python Keyring docs](https://pypi.org/project/keyring/)
 //! (search for "Using Keyring on headless Linux systems").
 //! The following `bash` function may be helpful:
-//! 
+//!
 //! ```shell
 //! function unlock-keyring ()
 //! {
@@ -139,7 +140,7 @@
 //! unset pass
 //! }
 //! ```
-//! 
+//!
 //! For an excellent treatment of all the headless dbus issues, see
 //! [this answer on ServerFault](https://serverfault.com/a/906224/79617).
 //!