Fix links in docs and deny rustdoc warnings in CI

.github/workflows/ci.yaml

@@ -62,5 +62,5 @@ jobs:
         uses: dtolnay/rust-toolchain@clippy
       - name: Rustdoc
         env:
-          RUSTDOCFLAGS: --cfg docsrs
+          RUSTDOCFLAGS: --cfg docsrs -Dwarnings
         run: cargo doc --all-features

src/router.rs

@@ -171,7 +171,8 @@ where
     /// There can only be a single catch-all notification handler. New ones replace old ones.
     ///
     /// The default handler is to do nothing for methods starting with `$/`, and break the main
-    /// loop with [`Error::Routing`] for other methods. Typically notifications are critical and
+    /// loop with [`Error::Routing`][crate::Error::Routing] for other methods. Typically
+    /// notifications are critical and
     /// losing them can break state synchronization, easily leading to catastrophic failures after
     /// incorrect incremental changes.
     pub fn unhandled_notification(
@@ -187,7 +188,8 @@ where
     ///
     /// There can only be a single catch-all event handler. New ones replace old ones.
     ///
-    /// The default handler is to break the main loop with [`Error::Routing`]. Since events are
+    /// The default handler is to break the main loop with
+    /// [`Error::Routing`][crate::Error::Routing]. Since events are
     /// emitted internally, mishandling are typically logic errors.
     pub fn unhandled_event(
         &mut self,