Fix middleware typo

Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io>

examples/examples/middleware_http.rs

@@ -47,8 +47,8 @@ impl middleware::HttpMiddleware for Timings {
 		println!("[Middleware::on_call] method: '{}', params: {:?}, kind: {}", name, params, kind);
 	}
 
-	fn on_result(&self, name: &str, succeess: bool, started_at: Self::Instant) {
-		println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, succeess, started_at.elapsed());
+	fn on_result(&self, name: &str, success: bool, started_at: Self::Instant) {
+		println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, success, started_at.elapsed());
 	}
 
 	fn on_response(&self, result: &str, started_at: Self::Instant) {

examples/examples/middleware_ws.rs

@@ -51,8 +51,8 @@ impl middleware::WsMiddleware for Timings {
 		println!("[Middleware::on_call] method: '{}', params: {:?}, kind: {}", name, params, kind);
 	}
 
-	fn on_result(&self, name: &str, succeess: bool, started_at: Self::Instant) {
-		println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, succeess, started_at.elapsed());
+	fn on_result(&self, name: &str, success: bool, started_at: Self::Instant) {
+		println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, success, started_at.elapsed());
 	}
 
 	fn on_response(&self, result: &str, started_at: Self::Instant) {

examples/examples/multi_middleware.rs

@@ -56,8 +56,8 @@ impl middleware::WsMiddleware for Timings {
 		println!("[Timings:on_call] method: '{}', params: {:?}, kind: {}", name, params, kind);
 	}
 
-	fn on_result(&self, name: &str, succeess: bool, started_at: Self::Instant) {
-		println!("[Timings] call={}, worked? {}, duration {:?}", name, succeess, started_at.elapsed());
+	fn on_result(&self, name: &str, success: bool, started_at: Self::Instant) {
+		println!("[Timings] call={}, worked? {}, duration {:?}", name, success, started_at.elapsed());
 	}
 
 	fn on_response(&self, _result: &str, started_at: Self::Instant) {

examples/examples/tower_http.rs

@@ -55,8 +55,8 @@ impl middleware::HttpMiddleware for Timings {
 		println!("[Middleware::on_call] method: '{}', params: {:?}, kind: {}", name, params, kind);
 	}
 
-	fn on_result(&self, name: &str, succeess: bool, started_at: Self::Instant) {
-		println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, succeess, started_at.elapsed());
+	fn on_result(&self, name: &str, success: bool, started_at: Self::Instant) {
+		println!("[Middleware::on_result] '{}', worked? {}, time elapsed {:?}", name, success, started_at.elapsed());
 	}
 
 	fn on_response(&self, result: &str, started_at: Self::Instant) {