docs(lib): Fix some typos

src/service/new_service.rs

@@ -26,7 +26,7 @@ pub trait NewService {
     /// The future returned from `new_service` of a `Service`.
     type Future: Future<Item=Self::Service, Error=Self::InitError>;
 
-    /// The error type that can be returned when creating a new `Service.
+    /// The error type that can be returned when creating a new `Service`.
     type InitError: Into<Box<StdError + Send + Sync>>;
 
     /// Create a new `Service`.

src/service/service.rs

@@ -16,7 +16,7 @@ pub trait Service {
     /// The `Payload` body of the `http::Response`.
     type ResBody: Payload;
 
-    /// The error type that can occur within this `Service.
+    /// The error type that can occur within this `Service`.
     ///
     /// Note: Returning an `Error` to a hyper server will cause the connection
     /// to be abruptly aborted. In most cases, it is better to return a `Response`