Quick fix of the docs

src/dispatching/mod.rs

@@ -1,4 +1,4 @@
-//! Update dispatching.
+//! Updates dispatching.
 //!
 //! The key type here is [`Dispatcher`]. It encapsulates [`UpdateListener`], a
 //! handler of errors, and handlers for [10 update kinds]. When [`Update`] is

src/utils/mod.rs

@@ -1,2 +1,4 @@
+//! Some useful utilities.
+
 pub mod html;
 pub mod markdown;