Fix typo in play_shutter_sound docs

Co-authored-by: FenrirWolf <fenrirwolf@gmail.com>

ctru-rs/src/services/cam.rs

@@ -978,7 +978,7 @@ impl Cam {
     ///
     /// # Notes
     ///
-    /// Playing the shutter sound does not require a liviving handle to the [`Ndsp`](crate::services::ndsp::Ndsp) service.
+    /// Playing the shutter sound does not require a living handle to the [`Ndsp`](crate::services::ndsp::Ndsp) service.
     /// Volume will always be maxed out to ensure everyone within photo range can hear the picture being taken (as by japanese law).
     ///
     /// # Example