chore: Fix new docs warnings

crates/ruma-common/src/events/pdu.rs

@@ -2,7 +2,7 @@
 //!
 //! The differences between the `RoomV1Pdu` schema and the `RoomV3Pdu` schema are that the
 //! `RoomV1Pdu` takes an `event_id` field (`RoomV3Pdu` does not), and `auth_events` and
-//! `prev_events` take `Vec<(OwnedEventId, EventHash)> rather than `Vec<OwnedEventId>` in
+//! `prev_events` take `Vec<(OwnedEventId, EventHash)>` rather than `Vec<OwnedEventId>` in
 //! `RoomV3Pdu`.
 
 use std::collections::BTreeMap;

crates/ruma-common/src/serde/duration/opt_ms.rs

@@ -11,7 +11,7 @@ use serde::{
     ser::{Error, Serialize, Serializer},
 };
 
-/// Serialize an Option<Duration>.
+/// Serialize an `Option<Duration>`.
 ///
 /// Will fail if integer is greater than the maximum integer that can be
 /// unambiguously represented by an f64.
@@ -28,7 +28,7 @@ where
     }
 }
 
-/// Deserializes an Option<Duration>.
+/// Deserializes an `Option<Duration>`.
 ///
 /// Will fail if integer is greater than the maximum integer that can be
 /// unambiguously represented by an f64.

crates/ruma-signatures/src/keys.rs

@@ -144,7 +144,7 @@ impl Ed25519KeyPair {
     ///
     /// # Returns
     ///
-    /// Returns a Vec<u8> representing a DER-encoded PKCS#8 v2 document (with public key)
+    /// Returns a `Vec<u8>` representing a DER-encoded PKCS#8 v2 document (with public key)
     ///
     /// # Errors
     ///