doc: minor format change

crates/matrix-sdk-crypto/src/identities/user.rs

@@ -615,7 +615,7 @@ impl OtherUserIdentityData {
         // We update the identity with the new master and self signing key, but we keep
         // the previous pinned master key.
         // This identity will have a pin violation until the new master key is pinned
-        // (see [`has_pin_violation`]).
+        // (see `has_pin_violation()`).
         let pinned_master_key = self.pinned_master_key.read().unwrap().clone();
 
         let new = Self {